These Manley NexTek valve springs are better-designed valve springs using state-of-the-art machinery for purpose-built racing engines. They're manufactured from super-clean, high-tensile chrome silicon steel and are shot-peened to MIL specs for maximum fatigue life. They feature a proprietary, multi-step heat-treating that minimizes load loss and have computer-aided modeling to minimize valve bounce and valve gear separation. The Manley NexTek valve springs are smaller diameter and lightweight, allowing engines to rev higher faster. They have an extended tip thickness designed to eliminate overload breakage, and their tightly controlled open-end flatness reduces valve stem side loading.

More From This Category

MANLEY Valve Spring, Street Master, Chrome Silicon, 1.437 in. OD, 354 lbs./in. Rate, 1.100 in. Coil Bind Height, Dual, Set of 16

MANLEY Valve Spring, Street Master, Chrome Silicon, 1.437 in. OD, 354 lbs./in. Rate, 1.100 in. Coil Bind Height, Dual, Set of 16

$466.90

Sonnax Servo Return Spring, Ford, Cd4E, La4A-El, Each

Sonnax Servo Return Spring, Ford, Cd4E, La4A-El, Each

$17.32

COMP Cams Engine Valve Spring Seat, ID Spring Locator, 1.350 in. OD, .515 in. ID, .130 in. Thick, Each

COMP Cams Engine Valve Spring Seat, ID Spring Locator, 1.350 in. OD, .515 in. ID, .130 in. Thick, Each

$9.94

MANLEY Valve Lock, 10 Degree Machined, Bead Loc, Steel, +.050 .3415 in. Stem, Set of 8

MANLEY Valve Lock, 10 Degree Machined, Bead Loc, Steel, +.050 .3415 in. Stem, Set of 8

$77.39

Crow Cams 10 Deg SQUARE GROOVE -.050"

Crow Cams 10 Deg SQUARE GROOVE -.050"

$80.67