Use this exhaust system when you want to enhance your Ford Mustang's look and performance. It's perfect for Mustang owners who love a stylish and high - performing ride. The system uses heavy - gauge Aluminized Steel tubing, with a 3 - inch diameter for the cat - back dual split rear exit design. It's suitable for 2015 - 2025 Ford Mustang EcoBoost and EcoBoost Premium models.