Hypercoils 10" Coil-Over Spring - 2-1/2" I.D. - 450 lb. R040004 pick from different tune files

pick from different tune files stored on-board

6000 Series Reusable

2-1/2 in Stainless Tip

COMP Cams Hydraulic Roller Lifters are a performance upgrade for stock Hydraulic Roller lifters or retro-fit Hydraulic Roller lifters for non-roller blocks

Hypercoils 10" Coil-Over Spring - 2-1/2" I.D. - 450 lb. R040004 pick from different tune filesHypercoils are manufactured from the highest quality chrome silicone steel and high tensile chrome silicone steel available in the world. The material used in producing Hypercoils undergoes two separate magnaflux inspections. Once before manufacture and again after coiling. These inspections insure the wire is free from surface imperfections which, if gone undetected could lead to spring failure. The life of a suspension coil is directly related to