Manley Small Block Chevy 1.500in Head Diameter Race Flo Exhaust Valves (Set of 8) - 11521-8

Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...

Manley Big Block Chevy Stock 3/8in Stem Diameter Severe Duty Intake Valves (Set of 8) - 11520-8

Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...

Manley 426 HEMI 2.250 Intake .310inch Stem 5.490inch Length Stainless Intake Valves (Set of 8) - 11518-8

Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...

Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Exhaust Valves (Set of 8) - 11517-8

Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...

Manley Big Block Chevy Stock 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11514-8

Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...

Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valves - Set of 8 - 11507-8

Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:...

Manley Big Block Chevrolet 1.900 Diameter Stock Length Extreme Duty Exhaust Valve (Single Valve) - 11507-1

Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:...

Manley Small Block Chevy 3/8in Stem Diameter Race Flo Intake Valves (Set of 8) - 11506-8

Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems...

Manley Buick V6 1.5 Inch Head Diameter/.3415 Inch Stem Diameter/OE Height Exhaust Valves (Set of 6) - 11503-6

Manley Buick V6 1.5 Inch Head Diameter/.3415 Inch Stem Diameter/OE Height Exhaust Valves (Set of 6)

Manley SB GM/Ford/Chrysler Titanium Intake Valves 2.150 Head Dia 5.640 Length - Set of 8 - 11498HTB-8

Manley SB GM/Ford/Chrysler Titanium Intake Valves 2.150 Head Dia 5.640 Length - Set of 8

Manley SB Chrysler/Ford/GM Titanium Valves 2.180 Head Dia +0.600 Length Intake Valves Set of 8 - 11494HTB-8

Manley SB Chrysler/Ford/GM Titanium Valves 2.180 Head Dia +0.600 Length Intake Valves Set of 8

Manley SB GM/Ford/Chrysler Titanium Intake Valves 2.180 Head Dia 5.540 Length - Set of 8 - 11468HTB-8

Manley SB GM/Ford/Chrysler Titanium Intake Valves 2.180 Head Dia 5.540 Length - Set of 8