Howards Performance Hydraulic Roller Dual Valve Springs - 300 lb/in - 1.437 OD LY22471 All Spindles now include DMIs

All Spindles now include DMIs trick locknut

Gas Only Up to E15

A cut above the competition

Jacket and Pants sold separately

Howards Performance Hydraulic Roller Dual Valve Springs - 300 lb/in - 1.437 OD LY22471 All Spindles now include DMIsProduct Description: Valve Spring Dual Spring Damper 300 lb in Spring Rate 1. 125 in Coil Bind 1. 437 in OD Set of 16 The name Howards Cams has been synonymous with high performance camshafts since the 1950s. Howards Cams have always used on track experience to design the most powerful designs. This includes early Top Fuel favorites driven by Jack Chrisman and Larry Dixon Sr. Today we have even a greater group of experienced racers in Circle Track,