Hypercoils 12" Coil-Over Spring - 2-1/2" I.D. - 125 lb. AA0700AG3R and produce excellent horsepower and

and produce excellent horsepower and torque gains

and Diaphragm AssemblyAeromotive Inc

3 in Rectangular Port

1975-1975 Pontiac Grand LeMans

Hypercoils 12" Coil-Over Spring - 2-1/2" I.D. - 125 lb. AA0700AG3R and produce excellent horsepower andHypercoils 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