The Flowmaster American Thunder® Cat-back exhaust system for the 2015-2023 Ford Mustang with the 2.3L Ecoboost engine is perfect for the person looking for an aggressive exterior sound level while maintaining a moderate interior sound with all of the performance benefits that you would expect from Flowmaster®. This bolt-on emissions legal system is constructed from 409S stainless steel and features a single 2.50-inch mandrel-bent inlet tube that splits into duals leading into a pair of our race proven 3.00-inch inlet Outlaw® mufflers for both maximum performance and sound. The system is finished off with dual 4.00-inch polished stainless steel tips that exit within the rear bumper valence. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty and includes all necessary parts and hardware for an easy installation you can do at home. Note: Fits both hardtops and convertible models.