The Flowmaster American Thunder cat-back exhaust system is for 2009-2019 Toyota Tundra trucks with the 4.6L or 5.7L engine is perfect for the person looking for an deep aggressive exterior tone with a mellow growl inside the truck and all of the performance benefits you expect from a Flowmaster system. This bolt-on emissions-legal system features all stainless steel construction, a specially designed dual inlet Super 40 Series muffler flowing into dual 2.50-inch mandrel-bent tailpipes for maximum performance with a deep tone. The kit comes with two sets of tailpipe exits for either a dual straight out the back look, or dual out behind the rear tires which is beneficial for towing. The tailpipes are finished off with a pair of 3.50-inch double wall polished stainless steel tips. The system includes all necessary parts and hardware for easy at home installation and is covered by our Lifetime Limited Warranty. Note: Fits 2/4 wheel drive. Does not fit regular cab/short bed or double cab/long bed models. Only fits 2009 models built after 08/2008.