PAC Racing Springs 1300 Series Drag Race Dual Valve Spring - 813 lb. - 0.985 in Coil Bind - 1.300 in OD 26995-16 zMAX is not an additive

zMAX is not an additive at all

without cross over exhaust

Low Profile Design Provides Excellent Fuel Flow Capacity

B&M Mega / Sport Shifters

PAC Racing Springs 1300 Series Drag Race Dual Valve Spring - 813 lb. - 0.985 in Coil Bind - 1.300 in OD 26995-16 zMAX is not an additiveProduct Description: Valve Spring 1300 Series Drag Race Dual Spring 813 lb in Spring Rate 0. 985 in Coil Bind 1. 300 in OD Sold Individually 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