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

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.

This Part Fits:

Year	Make	Model	Submodel
2020-2026	Chevrolet	Silverado 2500 HD	Custom
2020-2026	Chevrolet	Silverado 2500 HD	High Country
2020-2026	Chevrolet	Silverado 2500 HD	LT
2020-2026	Chevrolet	Silverado 2500 HD	LTZ
2020-2026	Chevrolet	Silverado 2500 HD	WT
2024-2026	Chevrolet	Silverado 2500 HD	ZR2
2021-2026	Chevrolet	Silverado 3500 HD	High Country
2021-2026	Chevrolet	Silverado 3500 HD	LT
2021-2026	Chevrolet	Silverado 3500 HD	LTZ
2021-2026	Chevrolet	Silverado 3500 HD	WT
2020,2022-2026	GMC	Sierra 2500 HD	AT4
2024-2026	GMC	Sierra 2500 HD	AT4X
2020	GMC	Sierra 2500 HD	Base
2020,2022-2026	GMC	Sierra 2500 HD	Denali
2023-2026	GMC	Sierra 2500 HD	Pro
2020,2022-2026	GMC	Sierra 2500 HD	SLE
2020,2022-2026	GMC	Sierra 2500 HD	SLT
2021-2026	GMC	Sierra 3500 HD	AT4
2021	GMC	Sierra 3500 HD	Base
2021-2026	GMC	Sierra 3500 HD	Denali
2023-2026	GMC	Sierra 3500 HD	Pro
2021-2026	GMC	Sierra 3500 HD	SLE
2021-2026	GMC	Sierra 3500 HD	SLT