Hypercoils 13" Rear Coil Spring - 5" O.D. - 200 lb. 37017K Proven to handle 500 miles

Proven to handle 500 miles of competition at over 9500 RPM

1966-1967 Chevrolet Caprice Base CID 283 Naturally Aspirated GAS

1 specifications including

increased strength and improved heat dissipating characteristics

This bolt on 409S stainless steel system features a 3

Hypercoils 13" Rear Coil Spring - 5" O.D. - 200 lb. 37017K Proven to handle 500 milesHypercoils 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