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Flowmaster American Thunder Cat Back Exhaust System 817664

Exhaust System Kit


Fits 2010-2018 Toyota Tundra with 4.6L or 5.7L V8 engine. 145in. Wheelbase Models Only.

American Thunder Cat Back Exhaust System; Dual; Dual Rear Same Side Exit; 2.5 in. Tubing; 40 Series Big Block Mufflers; 3.5 in. Pol. Stainless Steel Tips;

Please Call for Availability
(717) 697-8418


  • Mandrel Bent Stainless Steel Tubing
  • Multiple Exit Styles Provided In Kit
  • Aggressive Performance Tone
  • Lifetime Limited Warranty
Flowmaster's American Thunder cat-back exhaust system for the 2009-2018 Toyota Tundra pickup trucks with the 5.7L or 4.6L V8 engines is perfect for the person looking for an aggressive sound level with all of the performance benefits that you would expect from Flowmaster. This DOR/DOS (Dual Out Rear, Dual Out Side) bolt on 409S stainless steel system features dual 2.50 in. tailpipes and 3.50 in. polished stainless steel tips. This system is designed to fit regular cab/long bed, double cab/short bed and CrewMax models. The exhaust system is covered by Flowmaster's Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.


Shipping Information

  • Item Requires Shipping
  • 73.0 lbs.
  • W15.0000” x H17.2500” x L52.5000”


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