Home - Return to Previous Page
Additional Images

Flowmaster American Thunder Cat-Back Exhaust System For 07-13 GM 1500 4.8L/5.3L

Pricing: $999.95

Customize Your Item

CA Prop 65
FREE Ground Shipping


Our American Thunder cat-back exhaust system for 2007-2013 GM Silverado/Sierra 1500 with the 5.3L engine, is perfect for the person looking for moderately aggressive sound levels both inside and outside of the truck. This bolt-on emissions-legal system features 3.00-inch mandrel-bent stainless steel tubing flowing into a Super 40 Series muffler, for a deep powerful sound. The mandrel-bent 2.50-inch stainless steel tailpipes can be configured with your choice of exit locations, either straight out the back under the bumper for a muscular look, or exiting out behind the rear tires on each side of the truck. This is the ideal tailpipe location when towing a boat or RV. The tailpipes are finished off with large 3.50-inch double wall polished stainless steel tips. The system includes all necessary parts and hardware for an easy installation and is covered by our Lifetime Limited Warranty.



  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Delta Flow Technology
  • Dyno Tuned For Maximum Performance



  • 2007-2013 GMC Sierra 1500 5.3L
  • 2007-2008 GMC Sierra 1500 4.8L
  • 2007-2013 Chevrolet Silverado 1500 5.3L
  • 2007-2008 Chevrolet Silverado 1500 4.8L



  • Flowmaster American Thunder Cat-Back Exhaust System
  • All Mounting Hardware



  • Fits all 2/4 wheel drives with 143.5 and 157.5-inch wheelbases. Also fits 2007-2008 GM Silverado/Sierra 1500 with 4.8L engines and 143.5 and 157.5-inch wheelbases
  • This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations


  • 817680
  • 817680
  • Flowmaster
  • New

Shipping Information

  • Item Requires Shipping
  • FREE Ground Shipping

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.