Pit Stop USA is The Online Motorsports Superstore! 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. We feature Hypercoils UHT 2-1/2" I.D. x 15" Tall Coil-Over Springs and more.
