Give your 2018+ 5.0L Mustang GT an aggressive race-inspired sound and powerful looks, and boost performance with this ROUSH Performance Axle-Back Exhaust System. This 2018+ ROUSH Performance Axle-Back Exhaust System is constructed of corrosion-resistant T-304 stainless steel, and is mandrel-bent for high-performing airflow. Thanks to hours of research and development, testing, and validation, this system improves flow and reduces back pressure. Along with quad polished T-304 stainless steel tips, this system includes dual high-flow mufflers that improve the stock sound, performance, and flow characteristics of the Mustang's V8 powerhouse. Ships Free! ROUSH Axle-Back Exhaust for 2018-2023 5.0L GT Mustangs adds an aggressive sound & powerful looks. Corrosion-resistant 304 SS dual mufflers & quad tips. 2018 Mustang GT, Manual and Automatic Transmission, Coupe and Convertible 2018-2023 Ford Mustang