Flowmaster American Thunder Cat-Back Exhaust System For 99-07 GM 1500 4.8L/5.3L 2001-2007 GMC Sierra 2500 Up-Pipe gaskets not included

Up-Pipe gaskets not included

2011–2016 Ford F-350 Super Duty 6

75”) is larger than stock to allow for increased flow and optimized surge port

The kit includes mounts that fit into factory locations without cutting

Two: Banks cast end tanks will never melt or burst under high-boost conditions

Flowmaster American Thunder Cat-Back Exhaust System For 99-07 GM 1500 4.8L/5.3L 2001-2007 GMC Sierra 2500 Up-Pipe gaskets not includedFor 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