Flowmaster 20-25 GM 2500/3500HD 6.6L FlowFX Cat-Back Exhaust System

Flowmaster's® Flow FX Cat-Back exhaust system for the 2020-2026 GM 2500HD and 3500HD trucks with the 6.6L gas engines gives you a great way to help you customize your GM truck to your personality. This performance exhaust system fits both 2/4 Wheel drive models and is manufactured from 409 stainless steel for years of trouble-free service and performance. Features include a 3.50-inch inlet pipe leading into a 409 stainless steel Flow FX series "straight-through" muffler for great sound and maximum performance and no drone. The muffler then connects to the factory tailpipe for a simple and effective performance upgrade. Max dyno gains of 11 hp and 10 lb-ft at the rear wheels. This results in better acceleration and towing performance. The system uses all the factory hanger locations and connections for an easy installation that you can do at home. Kits include installation instructions and all necessary hardware. Backed by Flowmaster's Lifetime Limited Warranty.

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
2020-2026	Chevrolet	Silverado 3500 HD	High Country
2020-2026	Chevrolet	Silverado 3500 HD	LT
2020-2026	Chevrolet	Silverado 3500 HD	LTZ
2020-2026	Chevrolet	Silverado 3500 HD	WT
2020-2026	GMC	Sierra 2500 HD	AT4
2024-2026	GMC	Sierra 2500 HD	AT4X
2020-2021	GMC	Sierra 2500 HD	Base
2020-2026	GMC	Sierra 2500 HD	Denali
2022-2026	GMC	Sierra 2500 HD	Pro
2020-2026	GMC	Sierra 2500 HD	SLE
2020-2026	GMC	Sierra 2500 HD	SLT
2020-2026	GMC	Sierra 3500 HD	AT4
2020-2021	GMC	Sierra 3500 HD	Base
2020-2026	GMC	Sierra 3500 HD	Denali
2022-2026	GMC	Sierra 3500 HD	Pro
2020-2026	GMC	Sierra 3500 HD	SLE
2020-2026	GMC	Sierra 3500 HD	SLT