Hypercoils 10" OBD Coil-Over Spring - 2-1/2" I.D. - 162 lb. 91929959 3/16" and 1/4" nuts are

3/16" and 1/4" nuts are available to fit most master cylinder and metering/proportioning valve applications

Eibach Springs are cold formed on CNC machinery

2004-2006 Chevrolet Colorado

5-4 PSI Operating Pressure

Hypercoils 10" OBD Coil-Over Spring - 2-1/2" I.D. - 162 lb. 91929959 3/16" and 1/4" nuts areOptimum 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