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Flowmaster 817895 American Thunder Cat Back Exhaust System

American Thunder Cat Back Exhaust System; Dual Rear Exit; Incl. 3 in. Tubing/Super 40 Series Muffler/4 in. Logo Black Coated Tips;
Limited Supply: only 6 remaining
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Pricing: $967.87
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Exhaust System Kit

American Thunder Cat Back Exhaust System

American Thunder Cat Back Exhaust System; Dual Rear Exit; Incl. 3 in. Tubing/Super 40 Series Muffler/4 in. Logo Black Coated Tips;

  • Exhaust Type: Cat-Back
  • Exit Position: Dual Out Rear
  • Inlet Inside Diameter: 3.000 in.
  • Material: Stainless Steel
  • Tail Pipe Diameter: 3.000 in.
  • Tip Diameter: 4.000 in.
  • Tubing Diameter: 3.000 in.
  • WARNING CA Proposition 65: Yes
  • WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm -

  • Moderate/Aggressive Exterior Tone
  • Uses Factory Hanger Locations
  • Stainless Steel Construction

Flowmaster's American Thunder cat-back exhaust system for the 2019 GM 1500 (new body style) trucks with 5.3L engine is perfect for the person looking for an aggressive sound level outside the truck, with a moderate interior tone and the performance benefits you would expect from Flowmaster. This emissions-legal bolt-on system fits all Crew Cab and Double Cab models with 5.5 and 6.5-ft long beds with factory dual exhaust option. Features include flex joint, mandrel-bent 3.00-inch stainless steel tubing flowing into a Super 40 Series muffler, dual 2.50-inch mandrel-bent stainless tailpipes that are finished off with quad 4.00-inch black ceramic coated stainless steel tips exiting out under the factory exhaust bezels. Designed for an easy fit, this system includes all necessary parts and hardware for an easy at home installation.

Flowmaster operates the only exhaust Research & Design facilities of its kind in the world, centered around the SuperFlow SF-7100 engine dynamometer complete with E.C.A. (engine cycle analysis) equipment and also SuperFlow chassis dyno's. Through use of these dyno's, Flowmasters engineering staff can track the complete engine cycle in millionths of a second and can obtain exact technical data of each degree of cam rotation, from induction to the tip of the exhaust system, while also showing the power numbers that really matter, the power numbers to the ground. Flowmaster also utilizes Spectrum Analyzers to fine tune the sound of each of the eleven different series of mufflers that Flowmaster currently offers, both for peak performance and just the right sound levels and tones. Flowmasters product line includes exhaust products for Performance Street, Muscle cars, Trucks, Street Rods, RV's, Motorhomes, and all types of race applications. With over 400 different muffler models, 370+ exhaust systems and numerous exhaust accessories available, Flowmaster offers you the choice of sound to fit your sound preference from wild to mild and of your specific vehicle needs. Call our experienced tech staff for live help and detailed information regarding your vehicles. With Ray still active and hands on with the R&D department in the development, not only of new exhaust products, but also with new technologies currently being tested in third and new R&D facility, the future looks to be very exciting indeed.


  • 817895
  • 817895
  • 700042039029
  • Flowmaster
  • Available
  • Buy with confidence seeing our inventory level.
  • New


Shipping Information

  • Item Requires Shipping
  • 66.5 lbs.
  • W14.5000” x H18.5000” x L62.7500”
  • Free Ground Shipping

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