Home » Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System
Flowmaster

Flowmaster 20-25 GM 2500HD 6.6L CCB American Thunder Cat-Back Exhaust System

SKU: flo817933
Only 2 left
Low inventory - Hurry up!
$1,117.95

Ready to install and hit the road!

All parts come with the essentials you need for a smooth fit and clear instructions. From performance upgrades to custom styling, unbox and get your ride ready with confidence!

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The Flowmaster® American Thunder® Cat-back exhaust system for the 2020-2026 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-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 a pair of large 4.00-inch 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. Fits 2020-2026 GM 2500HD/3500HD with 6.6L gas engine, Crew Cab/Short Bed, Dual Out Rear/Dual Out Side, Polished Tips - Aggressive to moderate sound Fits 2020-2026 Chevy Silverado/GMC Sierra 2500HD/3500HD trucks with 6.6L gas engine. Crew Cab/6.5ft bed only. Will not fit models with 5th wheel tow hitch installed.
  • Uses the Factory Hanger Locations for Easy Installation
  • Mandrel-bent 16-gauge Tubing for Maximum Exhaust Flow
  • 50 Series HD Muffler with Delta Flow Technology
  • 409 Stainless Steel Construction for Long Life
  • Multiple Tailpipe Exits Provided in Kit
  • Increased Performance and Exhaust Flow
  • Large 3.00-inch Dual Tailpipes
  • Deep Powerful Exterior Sound
  • Lifetime Limited Warranty
  • Flowmaster Quality

Fitment:
2020 Chevrolet Silverado 2500 HD
2020 GMC Sierra 2500 HD
2021 Chevrolet Silverado 2500 HD
2021 Chevrolet Silverado 3500 HD
2021 GMC Sierra 3500 HD
2022 Chevrolet Silverado 2500 HD
2022 Chevrolet Silverado 3500 HD
2022 GMC Sierra 2500 HD
2022 GMC Sierra 3500 HD
2023 Chevrolet Silverado 2500 HD
2023 Chevrolet Silverado 3500 HD
2023 GMC Sierra 2500 HD
2023 GMC Sierra 3500 HD
2024 Chevrolet Silverado 2500 HD
2024 Chevrolet Silverado 3500 HD
2024 GMC Sierra 2500 HD
2024 GMC Sierra 3500 HD
2025 Chevrolet Silverado 2500 HD
2025 Chevrolet Silverado 3500 HD
2025 GMC Sierra 2500 HD
2025 GMC Sierra 3500 HD
2026 Chevrolet Silverado 2500 HD
2026 Chevrolet Silverado 3500 HD
2026 GMC Sierra 2500 HD
2026 GMC Sierra 3500 HD


Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1