This American Thunder axle-back exhaust system for the 2005-2010 Ford Mustang GT, GT500, California Special, coupes and convertibles with the 4.6L or 5.4L engine. This system is perfect for the person looking for a moderately aggressive exterior and moderate interior sound level with all of the performance benefits that you would expect from Flowmaster. Features include 2.50-inch mandrel-bent stainless steel tubing flowing into a pair of Super 44 Series performance mufflers for maximum performance and that iconic deep aggressive sound. The system uses the factory hangers for ease of installation and is finished off with a pair of polished 4.00-inch stainless steel tips embossed with the Flowmaster logo. Designed for easy installation, this system includes all necessary parts, hardware.