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

Trick Flow Valve Spring Shims, Steel, Hardened, 1.460 in. Outside Diameter, .060 in. Thick, Set of 16

Trick Flow Valve Spring Shims, Steel, Hardened, 1.460 in. Outside Diameter, .060 in. Thick, Set of 16

$69.02

Crow Cams Valve Spring 7333 Dual Springs, Bulk

Crow Cams Valve Spring 7333 Dual Springs, Bulk

$2,821.50

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.16 in. OD. Spring, .5 in. ID, 1.1 in. OD, .095 in. Thick, Black, Set of 16

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.16 in. OD. Spring, .5 in. ID, 1.1 in. OD, .095 in. Thick, Black, Set of 16

$188.60

Crow Cams Dual Valve Springs

Crow Cams Dual Valve Springs

$368.64

Crow Cams Valve Spring Kit Ford Raptor V6 Performance Valve Spring Set

Crow Cams Valve Spring Kit Ford Raptor V6 Performance Valve Spring Set

$517.28

MANLEY Valve Spring Retainer, Super 7 Degree, Tensile Max, 1.620 in. OD, Double, Each

MANLEY Valve Spring Retainer, Super 7 Degree, Tensile Max, 1.620 in. OD, Double, Each

$72.41