Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 MSRP: Now: $395.52 Add to Cart Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 MSRP: Now: $395.52 Add to Cart Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 MSRP: Now: $395.52 Add to Cart Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 MSRP: Now: $395.52 Add to Cart Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 MSRP: Now: $395.52 Add to Cart Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 MSRP: Now: $395.52 Add to Cart Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 MSRP: Now: $395.52 Add to Cart Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 MSRP: Now: $395.52 Add to Cart Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 MSRP: Now: $395.52 Add to Cart Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 MSRP: Now: $395.52 Add to Cart Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 MSRP: $382.30 Now: $286.72 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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
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: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 MSRP: $395.52 Now: $296.64 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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
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: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11525-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11524-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.465in Head Dia. 5.080in O/A Length, 0.3415in Stem - 11523-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Set of 8) - 11522-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevy Small Block 1.940in Head Diameter Race Flo Intake Valves (Single) - 11522-1 MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11519-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8 MSRP: $257.20 Now: $192.91 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet 426 Hemi intake Valve Kit - 2.200in Head Dia. 5.490in O/A Length, 0.3100in Stem - 11516-8 MSRP: $239.60 Now: $179.69 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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
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: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11513-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11512-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.465in O/A Length, 0.3415in Stem - 11511-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11510-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11509-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.440in O/A Length, 0.3415in Stem - 11508-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8 MSRP: $652.80 Now: $489.59 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1 MSRP: $81.60 Now: $61.19 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.500in Head Dia. 5.035in O/A Length, 0.3415in Stem - 11505-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... 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MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Details Manley Performance Manley Buick V6intake Valve Kit - 1.775in Head Dia. 4.730in O/A Length, 0.3415in Stem - 11504-6 MSRP: $233.15 Now: $174.87 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.600in Head Dia. 4.921in O/A Length, 0.3415in Stem - 11551-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chrysler 340intake Valve Kit - 2.020in Head Dia. 5.050in O/A Length, 0.3720in Stem - 11550-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $386.34 Now: $289.75 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chrysler 361 Exhaust Valve Kit - 1.600in Head Dia. 5.075in O/A Length, 0.3715in Stem - 11549-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $372.19 Now: $279.14 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Oldsmobile 330 intake Valve Kit - 2.072in Head Dia. 4.713in O/A Length, 0.3415in Stem - 11548-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... 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MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Oldsmobile 330 Exhaust Valve Kit - 1.710in Head Dia. 4.668in O/A Length, 0.3415in Stem - 11547-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11546-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevy Race Series Stainless Steel Exhaust Valves 1.6in Dia. .341in Stem 5.065in L (Set of 8) - 11545-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley SBC 2.020 Severe Duty Intake Valves (Set of 8) - 11544-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley SBC 1.600 Severe Duty Exhaust Valves (Set of 8) - 11543-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley S/D 1.840/+.100 Severe Duty Exhaust Valves (Set of 8) - 11542-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $395.52 Add to Cart Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11541-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.720in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11540-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.600in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11539-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.325in O/A Length, 0.3720in Stem - 11538-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... 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Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.036in O/A Length, 0.3415in Stem - 11537-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... 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Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11536-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... 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MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
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 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.433in O/A Length, 0.3720in Stem - 11534-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.464in O/A Length, 0.3715in Stem - 11533-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Ford 289intake Valve Kit - 1.940in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11532-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Ford 289 Exhaust Valve Kit - 1.600in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11531-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevrolet Big Block Severe Duty/Pro Flo 5.325in O/A Length Intake Valves (Set of 8) - 11530-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Severe Duty Series Chevy Big Block Intake Valve 2 300 In Head Dia 5 325 In O/A Length - 11530-1 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $49.44 Now: $37.09 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11529-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve Set of 8 - 11528-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Big Block Chevrolet Int. 2.190 Head Dia. 5.218 O/A Length .3715 Stem Race Flo Valve (Single) - 11528-1 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $29.94 Now: $22.45 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.350in O/A Length, 0.3715in Stem - 11527-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...
Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.218in O/A Length, 0.3715in Stem - 11526-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...