Do you have a boosted, high-heat, high-horsepower engine? Manley offers custom race valves for your high performance engine. These Race Series Gen II custom valves are manufactured from XH-426 (exhaust) and NK-842 (intake) materials with hard tips and hardened grooves. They are tailored to length, groove position, head diameter, margin, and other specifications that you request when ordering. So, whether you're building an engine or are a serious racer, Manley is committed to seeing that you're there at the finish.

More From This Category

MANLEY Valve, Race Master, Exhaust, 32.0mm Head Dia, 0.313 in. Stem Dia, 4.405 in. Length, Volkswagen, Each

MANLEY Valve, Race Master, Exhaust, 32.0mm Head Dia, 0.313 in. Stem Dia, 4.405 in. Length, Volkswagen, Each

$47.58

MANLEY Valve, Severe Duty, Exhaust, 1.6 in. Head Dia, 0.3415 in. Stem Dia, 5.365 in. Length, SBC, Each

MANLEY Valve, Severe Duty, Exhaust, 1.6 in. Head Dia, 0.3415 in. Stem Dia, 5.365 in. Length, SBC, Each

$75.93

MANLEY Valve, Severe Duty, Exhaust, 1.9 in. Head Dia, 0.3715 in. Stem Dia, 5.464 in. Length, BBC, Set of 8

MANLEY Valve, Severe Duty, Exhaust, 1.9 in. Head Dia, 0.3715 in. Stem Dia, 5.464 in. Length, BBC, Set of 8

$607.34

MANLEY Valve, Custom, Titanium, Stem, Set of 8

MANLEY Valve, Custom, Titanium, Stem, Set of 8

$2,325.95

MANLEY Valve, Race Master, Exhaust, 26 mm Head Dia, 5.5 mm Stem Dia, 115.95 mm Length, For Honda, Set of 8

MANLEY Valve, Race Master, Exhaust, 26 mm Head Dia, 5.5 mm Stem Dia, 115.95 mm Length, For Honda, Set of 8

$399.33

Sonnax Oversized Pressure Regulator Valve Kit, Mercedes 722.6, Each

Sonnax Oversized Pressure Regulator Valve Kit, Mercedes 722.6, Each

$132.84