American Thunder Cat Back Exhaust System; Single; Dual Rear Same Side Exit; Incl. 3 in. Tailpipes/50 Series™ HD Muffler/4 in. Stainless Tips; 409 Stainless Steel;
The Flowmaster(R) American Thunder(R) Cat-back exhaust system for the 2020 Chevy Silverado and GMC Sierra 2500HD/3500HD trucks with the 6.6L gas engine, is perfect if you are looking for a moderate to aggressive sound level inside and outside of the truck, with all of the performance benefits that you would expect from Flowmaster(R) Designed for the Crew Cab, Standard Bed (6.5 ft.) models only, this bolt-on, emisisons-legal system features a stainless steel 50 Series HD(TM) muffler and large dual 3.00-inch 409 stainless steel mandrel-bent tailpipes that can be configured to exit either dual straight out the back, or dual out the sides behind the rear wheels which is best suited for towing applications. The system is finished off with polished 4.00-inch stainless steel tips and is covered by our Lifetime Limited Warranty. Designed for an easy fit, this system includes all necessary parts and hardware for installation.
  • Mandrel Bent 16 Gauge 409 Stainless Tubing
  • Uses The Factory Hanger Locations To Ease Installation
  • 50 Series HD Muffler With Delta Flow Technology
  • Increased Performance And Exhaust Flow
  • Multiple Tailpipe Exits Provided In Kit
  • Deep Powerful Exterior Sound
  • Large 3 in. Dual Tailpipes
  • Lifetime Limited Warranty
  • Flowmaster Quality

Application Summary:

Year Make/Model
2020-2021 Chevrolet Silverado 2500 HD
2020 Chevrolet Silverado 3500 HD
2020-2021 GMC Sierra 2500 HD
2020 GMC Sierra 3500 HD

Additional Information:

Fast Efficient Shipping

Through our distribution network Deliveries can be as fast as Next Day Delivery.
Delivery times vary by destination, tracking information is provided with every purchase.

Get it Installed

JB's Power Centre offers on-site professional installation services in Calgary and Edmonton, AB.
We have on staff licensed Mechanical Technicians as well as MECP Certified 12-Volt Technicians.

* Extend your products Manufacturer Warranty

All products include a manufacturer warranty, but you can extend this warranty with
JB's Purchase Protection Plan
*Available on select products.