Fits 20-26 GM 2500HD/3500HD 6.6L Gas Engine FFX Cat-Back Single Exit Exhaust System, 409 stainless steel
Flowmaster's® FlowFX 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.
- 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
Application Summary:
| Year |
Make/Model |
| 2020-2026 |
Chevrolet Silverado 2500 HD |
| 2020-2026 |
Chevrolet Silverado 3500 HD |
| 2020-2026 |
GMC Sierra 2500 HD |
| 2020-2026 |
GMC Sierra 3500 HD |
| Attributes |
| 2WD/4WD |
2WD, 4WD |
| Automotive Item Grade |
High Performance |
| Brand |
Flowmaster |
| CARB (California) Compliant |
Yes |
| California Proposition 65 |
Yes |
| Catalytic Converter Included |
No |
| Category |
Exhaust |
| Choose Your Part |
Exhaust System |
| Clamping Type |
Flat Band |
| Clamps Included |
Yes |
| Color |
Natural |
| Country of Origin (Primary) |
US |
| Drive |
2WD, 4WD |
| Emission Code |
5 |
| Exhaust Series |
FlowFX |
| Exhaust System Kit Type |
Cat-Back |
| Exhaust Tip Diameter |
5.00 |
| Exhaust Tip Finish |
Black Ceramic Coating |
| Exhaust Tip Length |
12.00 |
| Exhaust Tip Material |
304 Stainless Steel, 409 Stainless Steel |
| Exhaust Tip Quantity |
1 |
| Exit Position |
Single Out Side, Single Side Exit |
| Finish |
Natural |
| GTIN |
00090127976470 |
| Gasket Or Seal Included |
No |
| Grade Type |
Performance |
| Hangers Included |
Yes |
| Harmonized Tariff Code (Schedule B) |
8708925000 |
| Hazardous Material Code |
N |
| Heat Shield |
No |
| Heat Shield Included |
No |
| Inlet Diameter |
3.50 |
| Inlet Position |
Center |
| Inlet Tubing Diameter |
3.50 |
| Inlet Type |
Flanged |
| Life Cycle Status Code |
Available to Order |
| Main Piping Diameter |
3.50 |
| Material |
409 Stainless Steel |
| Mount Type |
Uses Factory Hanger |
| Mounting Bracket Included |
No |
| Muffler Body Height |
5.00 |
| Muffler Body Length |
18.00 |
| Muffler Body Material |
409 Stainless Steel |
| Muffler Body Shape |
Oval |
| Muffler Body Width |
8.00 |
| Muffler Color |
Natural |
| Muffler Flanged Inlet |
No |
| Muffler Flanged Outlet |
No |
| Muffler Included |
Yes |
| Muffler Inlet |
Centered |
| Muffler Inlet Diameter |
3.50 |
| Muffler Inlet Inside Diameter |
3.50 |
| Muffler Inlet Location |
Center |
| Muffler Inlet Outside Diameter |
3.63 |
| Muffler Material |
409 Stainless Steel |
| Muffler Outlet |
Centered |
| Muffler Outlet Diameter |
3.50 |
| Muffler Outlet Location |
Center |
| Muffler Outlet Quantity |
1 |
| Muffler Quantity |
1 |
| Muffler Series |
FlowFX |
| Muffler Shape |
Oval |
| Muffler Type |
Absorption |
| Outlet Diameter |
3.50 |
| Pipe Color |
Silver |
| Pipe Material |
409 Stainless Steel |
| Product Type |
Exhaust System |
| SDR Required Flag |
N |
| Sound Level |
Aggressive / Moderate |
| Spring Bolt Kit Included |
No |
| Sub Category |
Exhaust and Tail Pipes |
| System Type |
Cat-back |
| Tail Pipe Outlet Outside Diameter |
3.50 |
| Tail Pipe Quantity |
1 |
| Tail Pipe Tapered Outlet |
No |
| Tip Diameter |
3.50 |
| Tip Finish |
Black Ceramic Coating |
| Tip Material |
304 Stainless Steel |
| Tip Quantity |
1 |
| Tip Shape |
Round |
| Tubing Diameter |
3.50 |
| Tubing Diameter (IN) |
3.50 |
| Tubing Material |
409 Stainless Steel |
| Type |
Cat-Back |
| Valve Included |
No |
| Valve Type |
Not Applicable |
| Warning |
California Proposition 65 |
| part type |
Exhaust System |
