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
For dual exhaust performance where only a single exhaust system will fit (such as is commonly found in classic Camaros and Firebirds), the 80 Series Cross-Flow muffler fits transversely behind the rear axle and in front of the fuel tank. This makes our Flowmaster 80 series muffler the perfect OE replacement ? but with enhanced performance and sound. With single or dual inlets, the 80 Series gives excellent ground clearance, aggressive tone and offers dual outlets to fit muscle cars requiring this specialized fitment. Available in either 409S stainless steel or aluminized steel, it is fully MIG-welded for maximum durability.