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, NexTek, Drag Race, 1.540 in. OD, 964 lbs./in. Rate, 1.215 in. Coil Bind Height, Dual, Set of 16

MANLEY Valve Spring, NexTek, Drag Race, 1.540 in. OD, 964 lbs./in. Rate, 1.215 in. Coil Bind Height, Dual, Set of 16

$1,973.57

COMP Cams Valve Lock, Stamped, Hardened Steel, 7 Degree, 3/8 in. Valve Stem, Single Groove, Set of 12

COMP Cams Valve Lock, Stamped, Hardened Steel, 7 Degree, 3/8 in. Valve Stem, Single Groove, Set of 12

$31.29

Sonnax Elevated Pressure Main Pressure Regulator Spring, Ford, 4R44E, 4R55E, 5R44E, 5R55E

Sonnax Elevated Pressure Main Pressure Regulator Spring, Ford, 4R44E, 4R55E, 5R44E, 5R55E

$44.57

MANLEY Valve Spring Retainer, Steel, 7 Degree, 1.250 in. OD, Set of 16

MANLEY Valve Spring Retainer, Steel, 7 Degree, 1.250 in. OD, Set of 16

$140.86

COMP Cams Titanium Retainer, 10 Degree, 1.625 in. OD Double Springs, Each

COMP Cams Titanium Retainer, 10 Degree, 1.625 in. OD Double Springs, Each

$61.07