ROUSH's Axle-Back Exhaust for the 2015-2023 I4 2.3L Ecoboost & V6 3.7L Mustangs is a great solution for anyone looking for a much more aggressive tone, and an overall better look!Ford's stock exhaust doesn't quite have the aggressive tone or sound Mustang owners crave; this is where ROUSH Performance comes in! ROUSH Performance has a specially engineered this exhaust that fits both the V6 3.7L and the I4 2.3L 2015-2023 Mustangs. Constructed from T-304 stainless steel, this exhaust is corrosion and stain resistant. Mandrel bends help to maintain high flow and reduce backpressure constantly throughout. This exhaust uses factory mounting points and will fit both V6 and I4 Mustangs without requiring any modification or welding. This exhaust system also greatly improves the sound and performance of your Mustang with single-tip high-flow chambered mufflers. Shop Roush Performance 2015-2023 Mustang 3.7L V6 and 2.3L Ecoboost ROUSH Exhaust Kit - Round Tip (304SS). Dominating performance. Aggressive style. View now! 2015-2018 3.7L/2.3L Mustang, Manual and Automatic Transmission, Coupe and Convertible 2015-2023 Ford Mustang