Introducing Flowmaster's new FlowFX Axle-back exhaust system for the 2015-19 Ford Mustang with 2.3L EcoBoost and 3.7L V6 engines. This system is perfect for the person looking for a deep exterior sound while maintaining a moderate interior sound level with all of the performance benefits that you would expect from Flowmaster. Features include a pair of compact round FlowFX "straight-through" performance mufflers which have a large 3.00-inch core for maximum performance and a deep sound. The mufflers are constructed from bright 409S stainless steel, utilize the factory hangers and are finished off with large 4.50-inch black ceramic coated stainless steel tips that fill out the factory exhaust cutouts in the rear valance. This system is designed for easy installation, includes all necessary parts, hardware, and detailed instructions.Exhaust Type: Axle-BackExit Position: Dual Out RearInlet Inside Diameter: 3.000 in.Material: Stainless SteelTail Pipe Diameter: 3.000 in.Tip Diameter: 4.500 in.Tubing Diameter: 3.000 in.WARNING CA Proposition 65: YesWARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov