PAC Racing Springs 1300 Series Drag Race Dual Valve Spring - 400 lb. - 0.850 in Coil Bind - 1.106 in OD (Set of 16) 1239273 Data Grid - Choose parameters

Data Grid - Choose parameters and data log using the internal memory of the smart device to playback

and produce more low-end torque and horsepower

047 in x 3

Brodix Big Duke/Brodie Head

Retro Style Look

PAC Racing Springs 1300 Series Drag Race Dual Valve Spring - 400 lb. - 0.850 in Coil Bind - 1.106 in OD (Set of 16) 1239273 Data Grid - Choose parametersProduct Description: Valve Spring 1300 Series Drag Race Dual Spring 400 lb in Spring Rate 0. 850 in Coil Bind 1. 106 in OD Set of 16 Traditional Springs are made from the same size (Diameter) wire throughout the helix of the spring. PAC Racing Springs has partnered with technology leaders in order to provide this advanced new tapered wire product. Tapered wire allows for a true progressive and dual rate without reducing spring travel and increasing