Outfit your 2013-2014 Ford Mustang GT (5.0L V8) with the Flowmaster 817587 American Thunder Cat-Back Exhaust System the ultimate bolt-on upgrade for power, tone and presence. Designed for the serious enthusiast, this kit features mandrel-bent 3? stainless steel tubing, dual 4? polished stainless tips, and Flowmasters chambered muffler technology to deliver an aggressive exterior sound while keeping the interior tone manageable. Installation is made simple by using factory hangers and included hardware, requiring minimal modifications for a seamless upgrade experience. With a durable 409S stainless steel construction and Flowmasters heritage in performance exhaust systems, this 817587 kit is engineered for longevity and high output driving. If you want to boost throttle response, enhance the exhaust note and turn heads every time you fire up your Mustang GT, the Flowmaster 817587 system delivers.