Hypercoils 13" Rear Coil Spring - 5" O.D. - 200 lb. 37017K This bolt on 409S stainless

This bolt on 409S stainless steel system features a 3

5/16" hard line

105" wall chromemoly steel then black oxide coated and heat-treated

Note these shields are Snell rated only

1966-1967 Chevrolet Caprice Base CID 283 Naturally Aspirated GAS

Hypercoils 13" Rear Coil Spring - 5" O.D. - 200 lb. 37017K This bolt on 409S stainlessHypercoils 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