PAC Racing Springs 1300 Series Drag Race Dual Valve Spring - 813 lb. - 0.985 in Coil Bind - 1.300 in OD AK113112B The Behind-the-Head design features an

The Behind-the-Head design features an adjustable flex boom mic with dynamic noise-cancelling for the best in audio clarity

1969-1996 Chevrolet Impala

2007-2008 Chevrolet Suburban 1500

Trailer Door Bumper

1986 Mercury Capri 5

PAC Racing Springs 1300 Series Drag Race Dual Valve Spring - 813 lb. - 0.985 in Coil Bind - 1.300 in OD AK113112B The Behind-the-Head design features anProduct 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