These Extreme/Severe Duty Gen II custom valves with unmatched strength and superiority are the only valves of their kind. Exhaust material XH-428 and intake material NK-844 are paired together for ultimate dominance over all others. With four times the tensile strength of competitors' intake valves and supremely better fatigue life, Manley Severe Duty Gen II custom valves truly show their commitment to seeing that you're there at the finish. You decide the head diameter and seat and margin widths, as well as valve length, groove type, and location for the perfect custom setup! Image is a representation. Actual product may vary

More From This Category

MANLEY Valve, Severe Duty, Intake, 2.3 in. Head Dia., 0.3415 in. Stem Dia., 5.61 in. Length, Set of 8

MANLEY Valve, Severe Duty, Intake, 2.3 in. Head Dia., 0.3415 in. Stem Dia., 5.61 in. Length, Set of 8

$464.30

View
MANLEY Valve, Titanium, All Pro 1.625 in. Stem Dia., .3110 in. Stem Dia., Each

MANLEY Valve, Titanium, All Pro 1.625 in. Stem Dia., .3110 in. Stem Dia., Each

$218.25

View
MANLEY Valve, Race Master, Exhaust, Bead Loc, 33.0mm Head Dia., 0.313 in. Stem Dia., 4.405 in. Length, Volkswagen, Set of 4

MANLEY Valve, Race Master, Exhaust, Bead Loc, 33.0mm Head Dia., 0.313 in. Stem Dia., 4.405 in. Length, Volkswagen, Set of 4

$137.94

View
MANLEY Valve, Exhaust, Bead Loc, 1.85 in. Head Dia., 0.311 in. Stem Dia., 5.975 in. Length, Each

MANLEY Valve, Exhaust, Bead Loc, 1.85 in. Head Dia., 0.311 in. Stem Dia., 5.975 in. Length, Each

$226.16

View
MANLEY Valve, Race Master, Exhaust, 37.0mm Head Dia., 0.274 in. Stem Dia., 4.65 Length, For Ford, Each

MANLEY Valve, Race Master, Exhaust, 37.0mm Head Dia., 0.274 in. Stem Dia., 4.65 Length, For Ford, Each

$37.02

View