Howards Max Effort„¢ Dual Roller Valve Springs w/ Damper - 1.540" O.D., .750" I.D. 492090 The Flowmaster PRO Series line

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

We pride ourselves in our unique first time product designs providing wiring innovations to meet racers needs

Great performance with stock to mild converter

All ports are precisely fitted and finished with sturdy

FIA FT3 Approved 3-Layer Ballistic Nylon-Reinforced Flexible Fuel Bladder with Cross-Drilled Composite Nut-Ring Installed

Howards Max Effort„¢ Dual Roller Valve Springs w/ Damper - 1.540" O.D., .750" I.D. 492090 The Flowmaster PRO Series lineHowardsCams 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