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

COMP Cams Valve Lash Cap, 5/16 in. Valve Stem, .080 in. Thick, .190 in. Head Height, 426 HEMI, Set of 16

COMP Cams Valve Lash Cap, 5/16 in. Valve Stem, .080 in. Thick, .190 in. Head Height, 426 HEMI, Set of 16

$95.85

COMP Cams Valve Spring, Dual, 1.660 in. O.D, 580 lbs./in. Rate, 1.130 in. Coil Bind Height, Each

COMP Cams Valve Spring, Dual, 1.660 in. O.D, 580 lbs./in. Rate, 1.130 in. Coil Bind Height, Each

$69.26

MANLEY Valve Spring Retainer, Titanium, 7 Degree, +.100 in, 1.500 in. OD, Each

MANLEY Valve Spring Retainer, Titanium, 7 Degree, +.100 in, 1.500 in. OD, Each

$35.37

MANLEY Valve Spring, NexTek, Drag Race, 1.677 in. OD, 746 lbs./in. Rate, 1.160 in. Coil Bind Height, Triple, Polished, Each

MANLEY Valve Spring, NexTek, Drag Race, 1.677 in. OD, 746 lbs./in. Rate, 1.160 in. Coil Bind Height, Triple, Polished, Each

$112.09

COMP Cams Valve Spring, Dual, 1.540 in. O.D, 550 lbs./in. Rate, 1.100 in. Coil Bind Height, Set of 16

COMP Cams Valve Spring, Dual, 1.540 in. O.D, 550 lbs./in. Rate, 1.100 in. Coil Bind Height, Set of 16

$424.44

MANLEY Valve Stem Seal, 5/16 in. Stem, .500 in. Guide OD, Set of 16

MANLEY Valve Stem Seal, 5/16 in. Stem, .500 in. Guide OD, Set of 16

$64.85