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 Lock, 10 Degree Machined, Bead Loc, Steel, +.050 .3110 in. Stem, Set of 8

MANLEY Valve Lock, 10 Degree Machined, Bead Loc, Steel, +.050 .3110 in. Stem, Set of 8

$77.39

Manley Valve Lock/Keeper, 7deg .3415, Set of 8

Manley Valve Lock/Keeper, 7deg .3415, Set of 8

$372.90

MANLEY Valve Spring and Retainer, NexTek, Dual, 8mm Stem Diameter, 7 Degree Lock, 1.340 in. Spring O.D, Kit

MANLEY Valve Spring and Retainer, NexTek, Dual, 8mm Stem Diameter, 7 Degree Lock, 1.340 in. Spring O.D, Kit

$1,685.59

MANLEY Valve Spring Retainer, Super 7 Degree, Tensile Max, 1.550 in. OD, Double, Set of 16

MANLEY Valve Spring Retainer, Super 7 Degree, Tensile Max, 1.550 in. OD, Double, Set of 16

$1,158.41

COMP Cams Valve Lash Cap, 5/16 in. Valve Stem, .080 in. Thick, .230 in. Head Height, Set of 8

COMP Cams Valve Lash Cap, 5/16 in. Valve Stem, .080 in. Thick, .230 in. Head Height, Set of 8

$47.93