Howards Max Effort„¢ Dual Roller Valve Springs w/ Damper - 1.540" O.D., .750" I.D. 492090 DO NOT apply directly to

DO NOT apply directly to exhaust components

The Flowmaster PRO Series line of racing silencers will make you a believer

Can also be worn under face mask for added protection of head and neck

All ports are precisely fitted and finished with sturdy

Great performance with stock to mild converter

Howards Max Effort„¢ Dual Roller Valve Springs w/ Damper - 1.540" O.D., .750" I.D. 492090 DO NOT apply directly toHowardsCams competition racing valve springs are CNC coiled and heat treated in the finest facilities available. Using only the highest quality valve spring wire, all Howards? valve springs are stress relieved, ground and shot peened to offer our customers some of the very best valve springs on the market. Whether you're running a flat tappet or roller cam in your drag race, circle track, road course, performance marine or other extreme race