Overview:
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.
Features:
Max increases of up to 13 hp and 15 lb-ft over the stock exhaust at the rear wheels
3.50-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
5.00-inch black ceramic coated tip adds a custom look to the truck
Includes complete hardware and factory styled hangers in the stock locations for an easy installation
Flow FX “straight through” performance muffler delivers a deep, moderate performance tone and improves exhaust flow
Backed by Flowmaster’s Lifetime Limited warranty
Specs:
Brand: Flowmaster
CARB (California) Compliant: Yes
Catalytic Converter Included: No
Catalytic Converter Quantity: 0
Clamping Type: Flat Band
Clamps Included: Yes
Emission Code: 5
Exhaust Series: Flow FX
Exhaust Tip Color: Black
Exhaust Tip Connection: Clamp-On
Exhaust Tip Cut: Angled
Exhaust Tip Edge: Rolled Edge Angle Cut
Exhaust Tip Finish: Black Ceramic Coating
Exhaust Tip Material: 304 Stainless Steel
Exhaust Tip Quantity: 1
Exhaust Tip Shape: Round
Exhaust Tip Wall: Single Wall
Exit Style: Single Out Side
Finish: Natural
Gasket Or Seal Included: No
Grade Type: Performance
Hangers Included: Yes
Heat Shield Included: No
Inlet Diameter: 3.5
Inlet Type: Flanged
Main Piping Diameter: 3.5
Mount Type: Uses Factory Hanger
Mounting Bracket Included: No
Muffler Body Height: 5
Muffler Body Length: 18
Muffler Body Material: 409 Stainless Steel
Muffler Body Shape: Oval
Muffler Body Width: 8
Muffler Color: Natural
Muffler Finish: Natural
Muffler Flanged Inlet: No
Muffler Flanged Outlet: No
Muffler Included: Yes
Muffler Inlet Connection: Slip-Fit
Muffler Inlet Inside Diameter: 3.5
Muffler Inlet Location: Center
Muffler Inlet Outside Diameter: 3.63
Muffler Outlet Connection: Slip-Fit
Muffler Outlet Diameter: 3.5
Muffler Outlet Location: Center
Muffler Outlet Quantity: 1
Muffler Quantity: 1
Muffler Series: Flow FX
Muffler Type: Absorption
Pipe Color: Silver
Pipe Material: 409 Stainless Steel
Sound Level: Aggressive / Moderate
Spring Bolt Kit Included: No
Tail Pipe Outlet Outside Diameter: 3.5
Tail Pipe Quantity: 1
Tail Pipe Tapered Outlet: No
Type: Cat-Back
Valve Included: No
Valve Type: Not Applicable
Part Number: 717927
Applications:
- 2020-2026 Chevrolet Silverado 2500 HD 401 CID
- 2020-2026 Chevrolet Silverado 3500 HD 401 CID
- 2020-2026 GMC Sierra 2500 HD 401 CID
- 2020-2026 GMC Sierra 3500 HD 401 CID
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.
