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. 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 Thumpr 227/241 Hydraulic Roller Cam GK-Kit OE Roller SBC

COMP Cams Thumpr 227/241 Hydraulic Roller Cam GK-Kit OE Roller SBC

$2,307.74

Sonnax Performance Converter Kit, 5R110W, 6-Stud, 6.0L Dsl, Mp, Each

Sonnax Performance Converter Kit, 5R110W, 6-Stud, 6.0L Dsl, Mp, Each

$1,795.84

TURBOSMART IWG75 Wastegate Actuator, For BorgWarner EFR B1 Twin Scroll, 14PSI, Black, Each

TURBOSMART IWG75 Wastegate Actuator, For BorgWarner EFR B1 Twin Scroll, 14PSI, Black, Each

$202.86

DBA Rear 4000 Series XS Gold Brake Rotor, 315mm, For Mitsubishi Pajero Sports Series QE 12/15, Kit

DBA Rear 4000 Series XS Gold Brake Rotor, 315mm, For Mitsubishi Pajero Sports Series QE 12/15, Kit

$296.10