American Thunder Cat-Back Exhaust System 1999-2007* (*2007 Classic Only) Silverado/Sierra 1500 With 4.8L Or 5.3L Engine Aggressive Sound - Flowmaster - 17392

For the person who wants the aggressive look of a NASCAR race truck along with all the benefits that a Flowmaster Cat-back exhaust system provides. D.O.S.S.

(Dual out same side) systems are the perfect choice. The American Thunder systems deliver a moderate to aggressive interior and exterior tone and are suited to the enthusiast who wants their performance to be heard. The exhaust system is constructed from 3.00-inch mandrel-bent aluminized steel tubing flowing into a Super 40 Series performance muffler for a deep powerful sound, then is finished off with dual 2.50-inch tailpipes and a pair of 3.00-inch polished stainless steel tips. Includes all necessary hardware, instructions and is covered by our 3-year Limited Warranty. Notes: Fits both 2/4 wheel drive models with standard cab/short bed configuration 119 inch wheelbase.


Includes Hangers and Hardware for an Easy Installation

Mandrel-bent 16-gauge Aluminized Steel Tubing

Moderate to Aggressive Exterior Exhaust Tone

Dual 3.00-inch Polished Stainless Steel Tips

Dyno Tuned for Maximum Performance

Super 40 Series Performance Muffler

Uses the Factory Hanger Locations

Quick and Easy Installation