This Flowmaster Outlaw® Cat-back exhaust system for the 2004-2008 Ford F-150 truck is perfect for the person looking for maximum 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 Side) emissions-legal exhaust system for trucks with the 4.6L or 5.4L engine features all mandrel-bent stainless steel tubing flowing into a Super 10™ Series muffler for a deep aggressive exterior and interior sound. The mandrel-bent dual 3.00 in. stainless steel tailpipes use the factory hanger locations for an easy installation and are finished off large 4.00 in. black ceramic coated double wall stainless steel tips. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty and includes all necessary parts and hardware for an easy installation you can do at home. Note: Fits 2/4 wheel drive models all Wheelbases.