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Fitment Information
- Chevy Silverado 2500 HD 6.6L V8 (2020, 2021, 2022, 2023, 2024, 2025, 2026)
- Fits Custom, High Country, LT, LTZ, WT, ZR2
- Fits Custom, High Country, LT, LTZ, WT, ZR2
- Chevy Silverado 3500 HD 6.6L V8 (2020, 2021, 2022, 2023, 2024, 2025, 2026)
- Fits Base, High Country, LT, LTZ, WT
- Fits Base, High Country, LT, LTZ, WT
- GMC Sierra 2500 HD 6.6L V8 (2020, 2021, 2022, 2023, 2024, 2025, 2026)
- Fits AT4, AT4X, Base, Denali, Pro, SLE, SLT
- Fits AT4, AT4X, Base, Denali, Pro, SLE, SLT
- GMC Sierra 3500 HD 6.6L V8 (2020, 2021, 2022, 2023, 2024, 2025, 2026)
- Fits AT4, Base, Denali, Pro, SLE, SLT
- Fits AT4, Base, Denali, Pro, SLE, SLT
Emissions Compliance
This part does not have a CARB EO # and cannot be sold or shipped to California.
Specs & Features
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Finish: Natural
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Inlet Diameter: 3.50 IN
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Main Piping Diameter: 3.50 IN
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Tail Pipe Quantity: 1
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Exhaust Type: Cat-Back
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Exit Style: Single Out Side
- Sound Level: Aggressive / Moderate
- 3.5-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
- Kit includes complete hardware and factory styled hangers in the stock locations for an easy installation
- A tuned Flow FX style muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow with no drone
- Max increases of up to 11 hp and 10 lb-ft over the stock exhaust at the wheels
- Tuned performance muffler eliminates interior drone
- Maintains factory warranty
- Lifetime Limited Warranty
Product Description
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.
Redline360 is an authorized Flowmaster dealer and sells only genuine Flowmaster products.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.More in this category
Chevy Silverado 2500 HD Parts
Chevy Silverado 3500 Parts
Flowmaster Exhaust Systems
GMC Sierra 2500 HD Parts
GMC Sierra 3500 HD Parts
Reviews on this product
Redline360 is an Authorized Dealer so we only sell authentic and genuine parts and accessories.
Order updates, tracking and info
Our goal is your complete satisfaction. Upon ordering, you will receive an email confirmation of your order along with your invoice. You will be able to log into our website 24/7 to check on your order at any time. Your order is processed Monday through Friday from 8am to 6pm PST as soon as it is placed. Once your order ships, we will email you a tracking number so you can track your package.
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Any non CARB compliant items can not ship California. We will notify you if we have to cancel your order.
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Actual item may vary from picture