Hypercoils 4" OBD Coil-Over Spring - 2-1/2" I.D. - 700 lb. H778003M 1979-1986 GMC P2500

1979-1986 GMC P2500

106 cc Chamber

Self Lubricating Bushings

Derale Plate & Fin Engine Oil Cooler Kit

1967-1974 GMC G25/G2500 Van

Hypercoils 4" OBD Coil-Over Spring - 2-1/2" I.D. - 700 lb. H778003M 1979-1986 GMC P2500Optimum Body Diameter (OBD) Hypercoils feature a unique design concept that adjusts the body diameter of the spring relative to the end coils. The OBD design enables Hyperco to take full advantage of its ultra high tensile material by optimizing the applied stress through adjusting the spring's body diameter. HYPERCOILS because the most important race is the one you are in. Hyperco is a supplier of precision engineered, high performance suspension