Hypercoils 6" OBD Coil-Over Spring - 2-1/2" I.D. - 700 lb. 110025 Sierra 1500 HD 2003-2001

Sierra 1500 HD 2003-2001

Ignition Adapter Harness

Interchangeable w/ GM # 12568997

1981-1987 Pontiac Grand Prix 5

Hypercoils 6" OBD Coil-Over Spring - 2-1/2" I.D. - 700 lb. 110025 Sierra 1500 HD 2003-2001Optimum 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