Compact, lightweight single-chamber design that will net a noticeable sound reduction vs. open headers without sacrificing valuable and hard-earned horsepower. They are available in three compact case sizes, ranging from 3.00, 4.00, and 5.00 inches tall, with inlet and outlet sizes ranging from 2.50" up to 4.00" and in two inlet and outlet configurations.

The 30 Series Delta Force race mufflers are among our highest performing race mufflers and are ideal for very high horsepower applications. These mufflers are designed for race applications requiring maximum sound control, performance, and are available to fit many chassis configurations in both road and drag racing.

The 40 Series Delta Force race mufflers offer maximum performance with a substantial dB reduction over open headers. These are available in 3.00", 4.00" and 5.00" thick case sizes, and with inlets and outlets ranging from 2.50" up to 4.00" sizes. The 40 Series Delta Force mufflers are available in numerous offsets for easy fitment and fabrication.

The Delta Force 50 series race mufflers utilize Flowmaster's Delta Flow technology and feature excellent power characteristics with good sound reduction qualities and are constructed for race applications that have strict decibel level requirements to adhere to.

Flowmaster's smallest and lightest race mufflers to date. When attached directly to the collector, they generally produce more power than open headers, while taking the "edge" off that open header sound. These mufflers are designed to be used at race tracks requiring mufflers, but without dB restrictions.

Looking for a versatile muffler with lots of performance applications? The Pro Series control technology to the street and racetrack. These round-cased mufflers deliver ground breaking sound control while delivering maximum power and exhaust system efficiency. The full-size Pro Series mufflers sound great on gasoline or diesel truck or racing applications. The Pro Series “shorty” mufflers are a terrific choice for muscle cars and other performance vehicles where great sound is desired.

Flowmaster is proud to announce an innovative race muffler resulting in power loss of less than 1% with a lower signature profile than similar race muffler products. Delivering over 35 HP gain over the nearest competitor, the new PRO Series Outlaw will give anyone a distinct advantage on the race track.

Flowmaster's Alcohol Race Muffler incorporates strategically placed "burn holes" inside the muffler in all low-pressure areas to prevent damage from excess methanol fuel from puddling and backfiring on deceleration.