The muffler that started it all, the original 40 Series Muffler is an aggressive sounding street/strip muffler that delivers the powerful ?Flowmaster Sound? you?ve heard so much about. If you really want to hear your exhaust system and that great muscle car tone ? from both inside and outside of the vehicle - the 40 Series is for you
Utilizing Delta Flow Technology, this muffler gives the best performance to higher horsepower vehicles. The Super 40 features a black, oversize case, which helps reduce resonance while the deep outside tone says it?s a Flowmaster
Designed to reduce interior sound and resonance, the 50 Series Delta Flow?s moderate exterior tone level is the result our advanced technology. This compact exterior case size muffler was especially designed for passenger cars rather than trucks or SUV?s. Featuring our unique Resonance Tuning Chamber, the 3-chamber 50 Series Delta Flow gives the same performance as the two chambered Flowmaster mufflers and delivers increased engine efficiency for better power and mileage
These Laminar Flow technology mufflers can be used in other applications and feature a raw 304S stainless steel case with no logos for a cleaner appearance.These mufflers offer a quieter alternative to the glasspack style mufflers that are traditionally used in these applications, plus the Cool Shell Technology helps prevent the outside of the muffler case from seeing the extreme temperatures associated with sidepipe applications. The Slimline mufflers are made in the USA and backed by Flowmaster's Lifetime Limited Warranty.