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, Severe Duty, Exhaust, 1.625 in. Head Dia, 0.3415 in. Stem Dia, 5.565 in. Length, SBC, Set of 8

MANLEY Valve, Severe Duty, Exhaust, 1.625 in. Head Dia, 0.3415 in. Stem Dia, 5.565 in. Length, SBC, Set of 8

$607.34

MANLEY Valve, Severe Duty, Exhaust, 1.6 in. Head Dia, 0.3136 in. Stem Dia, 4.923 in. Length, For Chevrolet LS1, Each

MANLEY Valve, Severe Duty, Exhaust, 1.6 in. Head Dia, 0.3136 in. Stem Dia, 4.923 in. Length, For Chevrolet LS1, Each

$75.93

MANLEY Valve, Severe Duty, Exhaust, 1.615 in. Head Dia, 0.3136 in. Stem Dia, 5.23 in. Length, For Chevrolet LS7, Set of 8

MANLEY Valve, Severe Duty, Exhaust, 1.615 in. Head Dia, 0.3136 in. Stem Dia, 5.23 in. Length, For Chevrolet LS7, Set of 8

$607.34

MANLEY Valve, Titanium, Intake, Bead Loc, 2.15 in. Head Dia, 0.3415 in. Stem Dia, 5.24 in. Length, Each

MANLEY Valve, Titanium, Intake, Bead Loc, 2.15 in. Head Dia, 0.3415 in. Stem Dia, 5.24 in. Length, Each

$302.72

MANLEY Valve, Custom, Titanium, .3110 in. Stem Dia, Set of 8

MANLEY Valve, Custom, Titanium, .3110 in. Stem Dia, Set of 8

$2,591.35

Sonnax Boost Valve Kit, Aisin Aw, Aw450-43Le, Each

Sonnax Boost Valve Kit, Aisin Aw, Aw450-43Le, Each

$125.70