Crower Valve Springs - Dual 1.500 H764C36M Unlike other materials that degrade

Unlike other materials that degrade after repeated heat cycles in an engine bay

The Pro 5R is our most performance-oriented media available

Sound Barrier Kit

5-layers of progressively finer mesh cotton gauze media between 100% polyurethane top and base

Crower Valve Springs - Dual 1.500 H764C36M Unlike other materials that degradeProduct Description: Valve Spring Dual Spring Damper 452 lb in Spring Rate 1. 080 in Coil Bind 1. 500 in OD Set of 16 Crower Cams and Equipment Company, Inc., is a leading producer of aftermarket camshafts and valve train components. But over the years Crower has developed a more diverse line of products. Today, Crower is the world's largest manufacturer of aftermarket crankshafts and connecting rods, and the Crower line of clutches has been