Hypercoils 12" Coil-Over Spring - 2-1/2" I.D. - 400 lb. H776001L 570" ID that works well

570" ID that works well with our 951 dual valve springs

Designed for race applications where oil is clean and frequently inspected and changed

It is designed for chassis without x-members under the engine (asphalt and dirt modifieds

They can be bolted on to most harmonic balancers or used with a COMP Cams crankshaft socket

Hypercoils 12" Coil-Over Spring - 2-1/2" I.D. - 400 lb. H776001L 570" ID that works wellHypercoils 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