Overview:
Flowmaster’s® Flow FX Direct-Fit Muffler exhaust system for the 2020-2026 GM 2500HD and 3500HD trucks with the 6.6L gas engines gives you a great value packed way to help you customize your GM truck to your personality. This performance muffler 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 7 hp and 5 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:
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
Max increases of up to 12 hp and 11 lb-ft over the stock exhaust at the wheels
Tuned performance muffler eliminates interior drone
Maintains factory warranty
Lifetime Limited Warranty
Specs:
Body Diameter: 5
Body Height: 5
Body Length: 18
Body Material: 409 Stainless Steel
Body Width: 8
Brand: Flowmaster
Catalytic Converter Included: No
Clamping Type: Flat Band
Clamps Included: Yes
Color: Natural
Emission Code: 5
Exhaust Series: Flow FX
Exhaust Tip Quantity: 0
Exit Position: OEM
Exit Position: OEM
Finish: Natural
Gasket Or Seal Included: No
Grade Type: Performance
Heat Shield: No
Heat Shield Attached: No
Inlet Diameter: 3.5
Inlet Inside Diameter: 3.52
Inlet Location: Center
Inlet Outside Diameter: 3.11
Inlet Quantity: 1
Inlet Type: Slip-Fit
Main Piping Diameter: Center
Material: 409 Stainless Steel
Mount Type: Uses Factory Hangers
Muffler Body Length: 10
Muffler Body Material: 409 Stainless Steel
Muffler Body Shape: Round
Muffler Body Width: 8
Muffler Color: Natural
Muffler Finish: Natural
Muffler Inlet Location: Center
Muffler Material: 409 Stainless Steel
Muffler Outlet Location: Center
Muffler Part Number: Kit Only
Muffler Quantity: 1
Muffler Series: Flow FX
Muffler Shape: Oval
Muffler Type: Absorption
Outlet Diameter: 3.5
Outlet Inside Diameter: 3.52
Outlet Location: Center
Outlet Outside Diameter: 3.65
Outlet Quantity: 1
Outlet Type: Slip-Fit
Overall Length: 34.25
Pipe Material: 409 Stainless Steel
Shape: Oval
Single Dual: Single
Sound Level: Aggressive / Moderate
System Type: Direct-fit Muffler
Tubing Diameter: 3.5
Type: Direct-fit Muffler
Valve Actuator Included: No
Valve Included: No
Valve Type: Not Applicable
Part Number: 718155
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.
