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

COMP Cams Valve, Sportsman, Inconel, Exhaust, GM LS7, 1.615 in. Head, 5.590 in. Length, Set of 8

COMP Cams Valve, Sportsman, Inconel, Exhaust, GM LS7, 1.615 in. Head, 5.590 in. Length, Set of 8

$1,508.88

View
MANLEY Valve, Custom, Titanium, .3110 in. Stem Dia., Each

MANLEY Valve, Custom, Titanium, .3110 in. Stem Dia., Each

$215.41

View
MANLEY Valve, Race Flo, Exhaust, 31.0 mm Head Dia., 6.54 mm Stem Dia., 109.7 mm Length, For Mitsubishi, Set of 8

MANLEY Valve, Race Flo, Exhaust, 31.0 mm Head Dia., 6.54 mm Stem Dia., 109.7 mm Length, For Mitsubishi, Set of 8

$289.53

View
MANLEY Valve, Severe Duty, Intake, 2.1 in. Head Dia., 0.3415 in. Stem Dia., 5.24 in. Length, SBC, Each

MANLEY Valve, Severe Duty, Intake, 2.1 in. Head Dia., 0.3415 in. Stem Dia., 5.24 in. Length, SBC, Each

$56.11

View
MANLEY Valve, Race Flo, Intake, 31 mm Head Dia., 5.5 mm Stem Dia., 118.60 mm Length, For Honda, Each

MANLEY Valve, Race Flo, Intake, 31 mm Head Dia., 5.5 mm Stem Dia., 118.60 mm Length, For Honda, Each

$36.19

View
MANLEY Valve, Extreme Duty, Exhaust, 1.75 in. Head Dia., 0.3095 in. Stem Dia., 5.4 in. Length, Gen II, Each

MANLEY Valve, Extreme Duty, Exhaust, 1.75 in. Head Dia., 0.3095 in. Stem Dia., 5.4 in. Length, Gen II, Each

$104.86

View