Hypercoils 12" Front Coil Spring - 5-1/2" O.D. - 1000 lb. H776427XL XTreme is designed to hold

XTreme is designed to hold up to the extreme

Filter mount uses Fram PH8A or equivalent filter

Adapters / Plug / Pins

Holley 4165 Carburetors

Hypercoils 12" Front Coil Spring - 5-1/2" O.D. - 1000 lb. H776427XL XTreme is designed to holdHypercoils 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