Introducing our new Flow FX Axle-back exhaust system for 2005-2010 Ford Mustang GT, Shelby GT, GT500, California Special and Bullitt cars with the 4.6L and 5.4L engines. Features include dual 3.00-inch mandrel-bent stainless steel tubing running into a pair of compact round Flow FX "straight-through" performance mufflers for a deep tone. The large 3.00-inch core mufflers provide maximum performance, are constructed from bright 409S stainless steel and utilize the factory hanger locations for an easy installation. The mufflers are finished off with large 4.50-inch black ceramic coated stainless steel tips filling out the factory exhaust cutouts in the lower valance. Designed for easy installation, includes all necessary parts, hardware, and detailed instructions. Covered by our Lifetime Limited Warranty. Notes: Includes GT500KR models.