Adding a set of performance mufflers to your Mustang is a great way to get that popular American muscle car sound. Our wide variety of exhaust mufflers also add power by being less restrictive than factory mufflers. Choose from top brands in the industry such as BBK, Flowmaster, Pypes, SLP, and Jones to get a more aggressive exhaust tone. Flowmaster's super 44 2 chamber mufflers are a popular choice among Fox Body and New Edge owners. This muffler allows you to easily adjust the sound level and performance level of your exhaust. With an adjustable chamber valve built into the muffler, you can change the exhaust pitch and flow with the turn of a wrench. The set screw is located on the back of this 3 chamber muffler for easy, on the go adjustments. This allows you to modify sound levels up to 8 decibels across the full adjustment range. These mufflers are offered in 2.5" and 3" inlet/outlets to bolt up or weld onto just about any exhaust system.