Flowmaster

Flowmaster 817933 American Thunder Cat-back Exhaust System

Compatible with 2020 GM 2500HD/3500HD with 6.6L gas engine, Crew Cab/Short Bed, Dual Out Rear/Dual Out Side, Polished Tips

Part # 817933 Be the first to write a review
Estimated shipping date: 08/31/2022
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$911.95
Suggested Retail
$1,014.00
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5

Emissions

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.

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The Flowmaster® American Thunder® Cat-back exhaust system for the 2020 Chevy Silverado and GMC Sierra 2500HD and 3500HD trucks with the 6.6L gas engine, has a moderate to aggressive sound level inside and outside of the truck, with all of the performance benefits you expect from Flowmaster®. Designed for the Crew Cab, Standard Bed (6.5 ft.) models only, this bolt-on, emissions-legal system features a stainless steel 50 Series HD™ muffler and large dual 3.00 in. 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 a pair of large 4.00 in. polished 304 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.

Notes: Fits Crew Cab with 6.5' bed length, 153.7 in. wheelbase only.

Features:

  • Mandrel-bent 16-gauge Tubing for Maximum Exhaust Flow
  • Uses the Factory Hanger Locations for Easy Installation
  • 50 Series HD Muffler with Delta Flow Technology
  • 409 Stainless Steel Construction for Long Life
  • Increased Performance and Exhaust Flow
  • Multiple Tailpipe Exits Provided in Kit
  • Large 3.00-inch Dual Tailpipes
  • Deep Powerful Exterior Sound
  • Lifetime Limited Warranty
  • Flowmaster Quality
Brand Flowmaster
Emission Code5
Product TypeCat-Back Exhaust Systems
UPC700042039760
Manufacturer Part Number817933
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817933
5

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.
Fits 2020 Chevy Silverado/GMC Sierra 2500HD/3500HD trucks with 6.6L gas engine. Crew Cab/6.5ft bed only.
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