Our American Thunder cat-back exhaust system for 2009-2014 Ford F-150 trucks is perfect for the person looking for a moderately aggressive sound levels both inside and outside of the truck with all of the performance benefits that you would expect from Flowmaster. This bolt-on DOR/DOS (dual out rear or dual out the side tailpipe exits) is emissions legal and fits trucks with the 4.6L, 5.0L and 5.4L engines. Features include all stainless steel mandrel-bent construction, a Super 40 Series muffler exiting into dual 2.50-inch mandrel-bent tailpipes for maximum performance and sound. The exhaust features large 3.50-inch polished stainless steel tips and the system is covered by our Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for easy installation you can do at home. Note: Fits 2/4 wheel drive and all wheelbases.