Hypercoils 10" Coil-Over Spring - 2-1/2" I.D. - 500 lb. 12199901 320" outer diameter while reducing

320" outer diameter while reducing the outer diameter of the valve guide to

Perfect for street rods and muscle cars

or stock-style Ford 9" housings

New top-line contour improves aerodynamics & meets the maximum height rule of 2

Hypercoils 10" Coil-Over Spring - 2-1/2" I.D. - 500 lb. 12199901 320" outer diameter while reducingHypercoils 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