For over 25 years, the Flowmaster tone has been thundering through streets and on tracks around the world! Housed in two state-of-the-art facilities, Flowmaster uses premium materials along with extensive research and design to produce advanced, dyno-tuned exhaust systems and components that deliver power gains with an unmistakable sound. Some of the most distinct exhaust systems include the Flowmaster 40 Series and American Thunder mufflers, but there are plenty more choices—whether you want your ride to sound wild or mild, Flowmaster has the high-performance exhaust parts you need.