Hypercoils 13" Rear Coil Spring - 5" O.D. - 165 lb. RG10003XS or eliminate drone on the

or eliminate drone on the cabin of the vehicle while delivering that great Borla's sound

elastic waistband

Will not fir under stock Corvette hood

Breather Hole

Hypercoils 13" Rear Coil Spring - 5" O.D. - 165 lb. RG10003XS or eliminate drone on theHypercoils 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