The Sound of Power. Now you can give your modular V8 Mustang the aggressive exhaust note of a true muscle car with a SR Performance Axle-Back Exhaust System. Specifically tuned to get the optimal sound from your 4.6L V8 engine, this Axle-Back features two chambered mufflers that will produce an aggressive rumble that your 2005-2010 GT Mustang should have had straight from the factory.Aluminized Steel Construction. SR Performance manufactures their Axle-Back from mandrel bent, 2.5-inch diameter, aluminized steel tubing for durability and corrosion resistance. This SR Performance Axle-Back exhaust system features two chambered mufflers that end with 3-inch polished stainless steel slant cut exhaust tips for impressive good looks and sound.Direct Bolt-On Installation. SR Performance engineered their Axle-Back Exhaust to be a direct upgrade replacement for your Pony's factory rear axle-back exhaust. This Axle-Back Exhaust Kit easily bolts up in the stock location with no cutting, drilling or modifications required for a straight forward install that can be completed in about 2 hours.Application. This SR Performance Axle-Back Exhaust Kit is specifically designed to fit the 2005-2010 GT and Bullitt Mustang models equipped with the Modular 4.6L V8 engine.