The American Thunder® cat-back exhaust system for 2009-2021 Toyota Tundra trucks with the 4.6L, 4.7L 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 Flowmaster®. 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 final pipes for either a dual 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. 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.. Fits 2009-2021 Toyota Tundra 4.6L, 4.7L or 5.7L engine with 145-inch Wheelbase only. Note: Does not fit regular cab/short bed or double cab/long bed models. Only fits 2009 models built after 08/2008.. Flowmaster 09-21 Toyota Tundra V8 American Thunder SS Cat-Back Exhaust System. 2009-2021 Toyota Tundra 4.6L, 4.7L and 5.7L engines. - Aggressive sound. Flowmaster American Thunder Cat-back Exhaust System. Large 3.50-inch Polished 304 Stainless Steel Tips. Side Exit Tailpipes Ideal for Towing Applications. Mandrel-bent Stainless Steel Construction. Multiple Exit Styles Provided in Kit. Super 40 Series Performance Muffler. Uses the Factory Hanger Locations. Deep Aggressive Performance Tone. Includes all Necessary Hardware. Clears the Factory Spare Tire. 0921 TUNDRA V8 AMT DORS 409S. Lifetime Limited Warranty. SYS 09-21 TUNDRA V8. Easy Installation. SYS 09-21 TU

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