Flowmaster’s American Thunder Cat-back exhaust system for the 2011-2018 Chevrolet/GMC Silverado/Sierra 1500 pickups with the 6.2L V8 engine is perfect for the person looking for an aggressive exterior sound level while maintaining a moderate interior sound with all of the performance benefits that you would expect from Flowmaster. This bolt on 409S stainless steel system features a 3.50 inch inlet pipe assembly that runs into a 50 HD Series muffler. The systems uses 2.50 inch mandrel bent tailpipes for maximum performance and then is finished off with 3.50 inch polished stainless steel tips with embossed Flowmaster logos. This dual exit system can be exited out each side or straight out under the rear bumper. 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.