Manley Extreme Duty Series performance steel valves are a great choice for supercharged, alcohol-burning, or high-revving engines. These engines generate a lot of heat and require special valves that can handle that kind of punishment. All valves are made from the best stainless steel available, with chrome stems and hardened valve tips. Extreme Duty Series valves are swirl-polished and fully machined and available with either undercut heads or straight stems.

More From This Category

MILODON Valve, Intake, Stainless Steel, 1.94 in. Diameter, For Holden, 253 - 308, Each

MILODON Valve, Intake, Stainless Steel, 1.94 in. Diameter, For Holden, 253 - 308, Each

$45.88

MANLEY Valve, Custom, Titanium, .2754 in. Stem Dia, Set of 8

MANLEY Valve, Custom, Titanium, .2754 in. Stem Dia, Set of 8

$2,429.71

MANLEY Valve, Severe Duty, Intake, 2.08 in. Head Dia, 0.3415 in. Stem Dia, 5.34 in. Length, SBC, Set of 8

MANLEY Valve, Severe Duty, Intake, 2.08 in. Head Dia, 0.3415 in. Stem Dia, 5.34 in. Length, SBC, Set of 8

$628.35

COMP Cams Valve, Sportsman, Stainless Steel, Intake, For Chevrolet Small Block, 2.080 in. Head, 5.111 in. Length, Each

COMP Cams Valve, Sportsman, Stainless Steel, Intake, For Chevrolet Small Block, 2.080 in. Head, 5.111 in. Length, Each

$34.53

MANLEY Valve, Titanium, Intake, 2.4 in. Head Dia, 0.3415 in. Stem Dia, 6.64 in. Length, For Pontiac, Each

MANLEY Valve, Titanium, Intake, 2.4 in. Head Dia, 0.3415 in. Stem Dia, 6.64 in. Length, For Pontiac, Each

$325.41