Hypercoils 6" OBD Coil-Over Spring - 2-1/2" I.D. - 550 lb. 36001BK 34" x 18" x 8"

34" x 18" x 8"

Built-in quarter window recess

Fits Many After Market Master Cylinders

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Threads are 7/16"-14 x 1

Hypercoils 6" OBD Coil-Over Spring - 2-1/2" I.D. - 550 lb. 36001BK 34" x 18" x 8"Optimum 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