Hypercoils 12" Coil-Over Spring - 2-1/2" I.D. - 750 lb. SPBM3 wiring connections are available to

wiring connections are available to connect to the most common car radio systems

1967-1980 Ford Thunderbird

extreme duty black coating and 3/8"-16 bolt ends

4L Hemi swaps

2 x 3 in Primary Tubes

Hypercoils 12" Coil-Over Spring - 2-1/2" I.D. - 750 lb. SPBM3 wiring connections are available toHypercoils 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