Hypercoils 4" Coil-Over Spring - 2-1/2" I.D. - 600 lb. 30005P Straight-through design ensures unrestricted exhaust

Straight-through design ensures unrestricted exhaust flow and reduces back pressure

Has externally accessible pressure relief valve (max 14 psi)

Hellwig sway bars feature larger than stock diameters and precision engineered components to optimize handling and reduce body roll

These stamped steel drop bases feature a generous 1 drop with the necessary clearance bulges for use of the front mounted fuel inlets on the Sniper EFI unit

1960-1966 GMC 3000

Hypercoils 4" Coil-Over Spring - 2-1/2" I.D. - 600 lb. 30005P Straight-through design ensures unrestricted exhaustHypercoils 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