The Flowmaster American Thunder Axle-back exhaust system for the 2013-2014 Ford Mustang GT is perfect for the person looking for an aggressive sound level outside of the car with a moderate interior tone at different rpms. This bolt-on emissions-legal system is for cars with the 5.0L engine and features 3.00-inch mandrel-bent tubing flowing into a pair of Super 44 Series performance mufflers with 3.00-inch tailpipes for maximum performance and a deep powerful sound. The system is constructed from 409 stainless steel, uses the factory hanger locations and features large 4.00-inch polished stainless steel tips for a refined look. The system is covered by our Flowmaster Lifetime Limited Warranty and is designed for an easy fit and includes all necessary parts and hardware for installation. Note: This system fits coupes and convertibles.