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 Retainers, Titanium, 7 degree, 1.300 in. O.D, 0.675 in. I.D, Set of 16

Trick Flow Valve Spring Retainers, Titanium, 7 degree, 1.300 in. O.D, 0.675 in. I.D, Set of 16

$494.45

MANLEY Valve Spring Retainer, 10 Degree, H-13, 1.437/1.550 in. OD, Single/Double, Set of 16

MANLEY Valve Spring Retainer, 10 Degree, H-13, 1.437/1.550 in. OD, Single/Double, Set of 16

$561.39

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

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

$29.18

Crow Cams 4 CYL. H/D DUAL SPRING

Crow Cams 4 CYL. H/D DUAL SPRING

$188.30

COMP Cams Valve Spring, Race Street, 1.101 in. OD, Beehive, 1.640 in. Installed Height, Set of 16

COMP Cams Valve Spring, Race Street, 1.101 in. OD, Beehive, 1.640 in. Installed Height, Set of 16

$637.98

Sonnax Valve Body Detent Ball & Sleeve Kit, Chrysler, 42-44-46-48RH/Re, A727, A904, Each

Sonnax Valve Body Detent Ball & Sleeve Kit, Chrysler, 42-44-46-48RH/Re, A727, A904, Each

$20.00