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

Sonnax Valve Body Separator Plate, ZF8Hp45/55/70/75, Each

Sonnax Valve Body Separator Plate, ZF8Hp45/55/70/75, Each

$124.31

MANLEY Valve Spring Retainer, Titanium, Super 7 Degree, 1.550 in. OD, Lightweight, Each

MANLEY Valve Spring Retainer, Titanium, Super 7 Degree, 1.550 in. OD, Lightweight, Each

$55.61

Crow Cams H/D SPRING SUIT 4 CYL

Crow Cams H/D SPRING SUIT 4 CYL

$138.99

MANLEY Valve Spring Retainer, Titanium, Super 7 Degree, 1.500 in. OD, Double, Set of 16

MANLEY Valve Spring Retainer, Titanium, Super 7 Degree, 1.500 in. OD, Double, Set of 16

$890.07

COMP Cams 1.260 in. OD Single Spring, 1.700 in. Installed Height, 1 Spring

COMP Cams 1.260 in. OD Single Spring, 1.700 in. Installed Height, 1 Spring

$10.77

Crow Cams VALVE SPRING 8 CYL

Crow Cams VALVE SPRING 8 CYL

$382.63