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 Locator, Inside, Heat-Treated, Fits 1.550 in. OD. Spring, .570 in. ID, 1.535 in. OD, .062 in. Thick, Black, Each

MANLEY Valve Spring Locator, Inside, Heat-Treated, Fits 1.550 in. OD. Spring, .570 in. ID, 1.535 in. OD, .062 in. Thick, Black, Each

$12.36

AFR Spring Cup, O.D. 1.380 OD x 1.300 ID x .570 ID (Fits 8017 &8019 spring), Ea.

AFR Spring Cup, O.D. 1.380 OD x 1.300 ID x .570 ID (Fits 8017 &8019 spring), Ea.

$11.69

AFR Retainer, Titanium 10 degree 1.490 OD x 1.115 ID x .745 ID for SBC/BBC, Set of 16

AFR Retainer, Titanium 10 degree 1.490 OD x 1.115 ID x .745 ID for SBC/BBC, Set of 16

$753.78

COMP Cams Valve Lock, Steel, 10 Degree, 8mm, Single Groove, for LS1/LS6 Bead, Set of 12

COMP Cams Valve Lock, Steel, 10 Degree, 8mm, Single Groove, for LS1/LS6 Bead, Set of 12

$72.38

COMP Cams Valve Spring, Beehive Style, 1.415 in. OD, 1.700 in. Installed Height, 280 lbs./in. Rate, Each

COMP Cams Valve Spring, Beehive Style, 1.415 in. OD, 1.700 in. Installed Height, 280 lbs./in. Rate, Each

$48.11

MANLEY Valve Guides, Bronze, .311 I.D, .502 O.D, 1.625 in. Length Under Flange, Each

MANLEY Valve Guides, Bronze, .311 I.D, .502 O.D, 1.625 in. Length Under Flange, Each

$43.51