Flowmaster 409S Stainless Steel Mufflers and Kits

Flowmaster’s stainless steel products are made from durable 409S stainless steel and are covered by our exclusive 10-year Limited Warranty. These high quality products deliver excellent power and throttle response improvements and that signature performance sound you demand from all Flowmaster exhaust products.

Flowmaster exhaust systems and exhaust kits are unmatched in the industry in terms of fit, quality and performance. Our Force II exhaust systems are available for those who are looking for maximizing performance but with a mild, subdued tone that won’t wake the neighbors. For those who want their beast to be heard, there’s our American Thunder series. Available in Cat-Back, Axle-Back and Header-Back configurations, there is a system that will fit your needs.

Our True-Dual, Header-Back and Cat-Back systems are built with maximum performance and aggressive looks in mind. These systems generally follow the factory routing and utilize OEM hanger locations when possible.  These systems are mandrel bent for maximum performance and include specially selected mufflers for just the right performance and sound. Available in the aggressive American Thunder series as well as the quieter Force II series, and like all Flowmaster systems, the benefits include improved throttle response, power and mileage. Designed for an easy fit, these systems include everything you need to complete the installation for an incredible performance look and sound.

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