Flowmaster Pro Series Muffler w/ Turndown - 3.5" Inlet, 3.5" Outlet - 6" D x 16" L - Aluminized 1033-12 Tubing is 6063-T5 grade alloy

Tubing is 6063-T5 grade alloy with

Eliminates The Factory Resonator

25 Carb Hose End 991945

5:1 compression

612 in - Duration 291/302 - 115 LSA - 2300/7400 RPM - GM LS-Series 54-337-11 at low everyday prices

Flowmaster Pro Series Muffler w/ Turndown - 3.5" Inlet, 3.5" Outlet - 6" D x 16" L - Aluminized 1033-12 Tubing is 6063-T5 grade alloyThe Flowmaster PRO Series line of racing silencers will make you a believer. Developed with many of the top race engine builders and race teams around the country. The PRO series silencers feature a dramatic reduction of sound over open headers, without sacrificing your hard earned horsepower and torque. Race proven performance that will put you at the front of the pack. . quietly! The new Pro Series line of mufflers are designed to deliver