Introducing Flowmaster's new line of FlowFX axle-back exhaust systems for 2005-2010 Ford Mustang GT, GT500, California Special, Coupes and Convertibles with 4.6L or 5.4L V8 engines. This system is perfect for the person looking for a moderately aggressive exterior and interior sound level with all of the performance benefits that you would expect from Flowmaster. Features include new bright 409S stainless steel mandrel bent 2.50 inch tubing, Flowmaster's new FlowFX straight-through mufflers with a large 3.00 inch core for maximum performance, a deep aggressive sound and is finished off with polished 4.00 inch stainless steel tips that are embossed with the Flowmaster logo. Designed for easy installation, this system includes all necessary parts, hardware and detailed instructions.