Hypercoils 10" Coil-Over Spring - 2-1/2" I.D. - 450 lb. Fire Suppression System Activation Head Rocker stud diameter: 7/16"

Rocker stud diameter: 7/16"

Kit includes 7 steel bushings and spring clips

Shift Improver Kit for 93-06 4L60E

The larger plenum version #2890 for 4500 Series carburetors has an increased intake runner area and is capable of 800+ hp operating in the 3

With the level of research and development in this shoe

Hypercoils 10" Coil-Over Spring - 2-1/2" I.D. - 450 lb. Fire Suppression System Activation Head Rocker stud diameter: 7/16"Hypercoils 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