Hypercoils 14" UHT Barrel 2-1/2" I.D. Coil-Over Spring - 125 lb. NecksGen 2007 2500/3500 HD Classic (inc

2007 2500/3500 HD Classic (inc Dually)

1/4 in Hose Barb Outlet

B4 OE Replacement Series

All headers are a direct fit bolt on replacement when used with the correct matching mid-pipes which are available with high flow catalytic converters and in off road race versions

Hypercoils 14" UHT Barrel 2-1/2" I.D. Coil-Over Spring - 125 lb. NecksGen 2007 2500/3500 HD Classic (incOptimum 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. The results are in and they are simply incredible: More Deflection Less Weight Increased Rate Linearity More Resistance to Bowing Fits All