Flowmaster
Flowmaster 817979 American Thunder Cat-Back Exhaust System
Flowmaster 817979 American Thunder Cat-Back Exhaust System
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Description & Features
Flowmaster 817979 American Thunder Cat-Back Exhaust System
Flowmaster introduces our new American Thunder stainless steel cat-back exhaust system for the 2021-2026 Ford F-150 with the 2.7L, 3.5L and 5.0L engines. This system uses a Super 40 series muffler for a deep powerful sound and increased performance. Maximum dyno gains of 11 HP and 10 LB.FT. at the rear wheels. Mandrel bent 409 stainless steel tubing is used for maximum exhaust flow and durability. The system has a 3.0-inch inlet pipe and dual 2.5-inch tailpipes with both side exit and rear exit options that allow you to customize the look of the kit. 3.5-inch polished stainless steel tips finish off the kit for a classic performance look. All of the necessary hardware is included and factory-mounting locations are used for an easy installation. Backed by Flowmaster's Lifetime Limited Warranty.
- Includes Both Rear and Side Exit Tailpipes so the Final Look can be Customized
- Super 40 Series Performance Muffler Delivers a Deep and Aggressive Performance Tone
- Uses the Factory Hanger Locations for an Easy Installation
- Clears the Factory Spare Tire
- Stainless Steel Construction adds Durability
- 50-Inch Polished Stainless Steel Tips add a Classic Performance Look
- Delta Flow Technology Increases Performance and Reduces Drone
- Mandrel-bent Tubing Maximizes Exhaust Flow
- Maximum Dyno Gains of 11 HP and 10 LB.FT. at the Rear Wheels
- Lifetime Limited Warranty
Specifications
| Brand | Flowmaster |
| California Proposition 65 | Yes |
| California Proposition 65 Chemical Name | Nickel (Metallic) |
| CARB (California) Compliant | Yes |
| Catalytic Converter Included | No |
| Catalytic Converter Quantity | 0 |
| Category | Exhaust |
| Clamping Type | Flat Band |
| Clamps Included | Yes |
| Emission Code | 5 |
| Exhaust Series | American Thunder |
| Exhaust Tip Color | Silver |
| Exhaust Tip Connection | Clamp-On |
| Exhaust Tip Cut | Angled |
| Exhaust Tip Diameter | 3.50 |
| Exhaust Tip Edge | Angle Cut |
| Exhaust Tip Finish | Polished |
| Exhaust Tip Intercooled | No |
| Exhaust Tip Length | 13.00 |
| Exhaust Tip Material | 304 Stainless Steel |
| Exhaust Tip Quantity | 2 |
| Exhaust Tip Resonated | No |
| Exhaust Tip Shape | Round |
| Exhaust Tip Wall | Single Wall |
| Exit Style | Dual Out Rear |
| Finish | Natural |
| Gasket Or Seal Included | No |
| Grade Type | Performance |
| Hangers Included | Yes |
| Inlet Type | Clamp-On |
| Main Piping Diameter | 2.50 |
| Mount Type | Uses Factory Hangers |
| Mounting Bracket Included | Yes |
| Muffler Body Height | 5.00 |
| Muffler Body Length | 10.25 |
| Muffler Body Material | 409 Stainless Steel |
| Muffler Body Shape | Oval |
| Muffler Body Width | 10.00 |
| Muffler Color | Black |
| Muffler Finish | Black High-Temperature Paint Finish |
| Muffler Flanged Inlet | No |
| Muffler Flanged Outlet | No |
| Muffler Included | Yes |
| Muffler Inlet Connection | Slip-Fit |
| Muffler Inlet Inside Diameter | 3.00 |
| Muffler Inlet Location | Center |
| Muffler Inlet Outside Diameter | 3.13 |
| Muffler Outlet Connection | Slip-Fit |
| Muffler Outlet Diameter | 2.50 |
| Muffler Outlet Location | Dual |
| Muffler Outlet Quantity | 1 |
| Muffler Overall Length | 16.50 |
| Muffler Part Number | Kit Only |
| Muffler Quantity | 1 |
| Muffler Series | Super 40 Series |
| Muffler Type | Chambered |
| part type | Exhaust System |
| Pipe Color | Silver |
| Pipe Material | 409 Stainless Steel |
| Product Type | Exhaust System |
| Sound Level | Aggressive / Moderate |
| Spring Bolt Kit Included | No |
| Sub Category | Exhaust and Tail Pipes |
| Tail Pipe Outlet Outside Diameter | 2.50 |
| Tail Pipe Quantity | Dual |
| Tail Pipe Tapered Outlet | No |
| Tip Logo | Embossed |
| Type | Cat-Back |
| Valve Included | No |
| Valve Type | Not Applicable |
| Warning | California Proposition 65 |
Packaging Information
Weight: 56.8 lbs
Dimensions: 58.4 x 16.5 x 11.6 IN
Safety
⚠ WARNING: This product can expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information visit www.P65Warnings.ca.gov
Warranty
Installation Instructions
⚠ Fitment Notes
- Polished Tip Finish, Does not fit regular cab with 6.5' bed, does not fit models with factory dual exhaust, active exhaust or hybrid Powerboost
- 2021-2026 Ford f-150 Trucks with 2.7L, 3.5L Ecoboost, 3.5L Ti-VCT and 5.0L engines. Fits 2 & 4-wheel drive. Does not fit regular cab with 6.5' bed. Does not fit hybrid Powerboost models. Does not fit models with OEM active exhaust option.
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Vehicle Fitment
Vehicle Fitment
- 2021-2026 Ford F-150 King Ranch
- 2021-2026 Ford F-150 Lariat
- 2021-2023 Ford F-150 Limited
- 2021-2026 Ford F-150 Platinum
- 2021-2026 Ford F-150 Police Responder
- 2021-2026 Ford F-150 SSV
- 2024-2026 Ford F-150 STX
- 2021-2026 Ford F-150 Tremor
- 2021-2026 Ford F-150 XL
- 2021-2026 Ford F-150 XLT
