Hypercoils 8" OBD Coil-Over Spring - 2-1/4" I.D. - 225 lb. Shoulder Support 1984-1995 Pontiac Grand Prix

1984-1995 Pontiac Grand Prix

Simple Push Button 2 Mile Drive Calibration

2008-2010 GMC W4500 Forward

For the most severe applications

Hypercoils 8" OBD Coil-Over Spring - 2-1/4" I.D. - 225 lb. Shoulder Support 1984-1995 Pontiac Grand PrixOptimum 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