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2020 GMC Sierra 3500 HD Crew Cab Pickup
Introducing a tight-fit bracket system for the big block 1964-68 Chevelle
DFVehicle Applications: 1971 thru 1973 Buick Cars 7
Performance Ceramic Compound
1975-1996 Ford E-150 Econoline
Hypercoils 6" OBD Coil-Over Spring - 2-1/2" I.D. - 400 lb. K9010 2020 GMC Sierra 3500 HDOptimum 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