Hypercoils 13" Rear Coil Spring - 5" O.D. - 300 lb. 1034901 This cutting edge technology is

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Hypercoils 13" Rear Coil Spring - 5" O.D. - 300 lb. 1034901 This cutting edge technology isHypercoils 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