Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11735-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11777-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12741-8 MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11893-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 6.400in O/A Length, 0.3415in Stem - 11583-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3715in Stem - 10714-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11554-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $405.34 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3415in Stem - 10872-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.244in O/A Length, 0.3715in Stem - 11718-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 10894-8 MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. 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MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. 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Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3715in Stem - 11720-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. 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MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. 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Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... 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MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.610in O/A Length, 0.3415in Stem - 11896-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. 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MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... 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Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... 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Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... 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Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... 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MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... 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Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3110in Stem - 12802-8 MSRP: $415.30 Now: $311.48 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. 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MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... 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Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... 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MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... 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MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... 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Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... 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Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 12737-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11515-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11593-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12817-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 10883-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. 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Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11765-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11883-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... 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MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12745-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.454in O/A Length, 0.3715in Stem - 11733-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11535-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... 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MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... 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Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3110in Stem - 12811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... 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Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 10769-8 High-Quality Stainless Steel: Our Street Series valves, available as XH-424 for exhaust and NK-841 for intake, are crafted from top-grade stainless steel, ensuring durability and longevity. MSRP: $197.85 Now: $148.39 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11739-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11769-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11775-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3715in Stem - 11723-8 Manley?s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM MSRP: $251.58 Now: $188.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.380in O/A Length, 0.3415in Stem - 11581-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 6.450in O/A Length, 0.3415in Stem - 11597-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.364in O/A Length, 0.3715in Stem - 11561-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3110in Stem - 12803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted... MSRP: $685.44 Now: $514.08 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 Manley Severe Duty® Valves deliver the ultimate in strength, reliability, and high-performance durability. Engineered for extreme gasoline engine temperatures, these valves are crafted from exclusive materials (XH-428 for exhaust and NK-844 for intake),... MSRP: $401.42 Now: $301.07 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 12773-8 Discover the extraordinary capabilities of Manley Performance Products' Extreme Duty Series Valves. Engineered to cater to the demanding needs of Top Fuel and Funny Car drag racers, Big Block Chevy marine enthusiasts, and Small Block Chevy restricted...
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