Hypercoils 10" Coil-Over Spring - 2-1/2" I.D. - 125 lb Vise Insert one of the shoulder belts

one of the shoulder belts will elongate at different rate which forces the pelvis down into the seat cushion

3/8-16 in Thread / 5/16-18 in Thread

22 Degree 3" O

Heat-treated forging for strength and toughness

400 in H Beam Rods

Hypercoils 10" Coil-Over Spring - 2-1/2" I.D. - 125 lb Vise Insert one of the shoulder beltsHypercoils 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