Overview
The Flowmaster Outlaw Cat-Back exhaust system, part number FLW817726, is a dual exhaust in 409S stainless steel for the 2015-2019 Ford F-150. It is built for an aggressive exterior sound with a moderate level inside the cab, and it keeps the performance benefits the brand offers. It fits 2WD and 4WD F-150 trucks with the 2.7L and 3.5L EcoBoost, 3.5L TiVCT and 5.0L engines.
The tailpipe exit can be chosen. Tailpipes can run out the rear under the bumper for a muscular look, or out the sides behind the rear tires, which suits owners who tow an RV, boat or trailer. The system uses a Super 10 series performance muffler and includes all necessary parts and hardware for installation at home.
Key features
- 3.00-inch mandrel-bent inlet tube
- Super 10 series performance muffler
- Dual 2.50-inch mandrel-bent tailpipes
- 4.00-inch black ceramic coated stainless steel tips
- Choice of rear under-bumper or side-exit tailpipes
- 409S stainless steel construction
Choosing rear or side exit
The exit choice changes how the rear of the truck looks and where the exhaust flows, so it is worth deciding before buying. Rear under-bumper tips keep the sides clear and give a compact look, while side exits put the outlets behind the rear tires. Side tips can be more exposed to road spray and debris, so check them after wet or dusty drives.
Whichever exit is chosen, the hangers and mid-pipe joints carry the weight of the new pipes. Inspect them at every oil change or tire rotation, and listen for rattles that could signal loose parts. Tips and tailpipes that sit close to hot components should be checked for heat staining, and the area around the bumper should be kept clear of debris.
- Rear exit keeps the sides clear
- Side exit suits towing setups
- Check hangers and mid-pipe joints regularly
Specifications
| Brand | Flowmaster Exhaust |
|---|---|
| Part number | FLW817726 |
| Material | 409S stainless steel |
| Inlet tube | 3.00-inch mandrel-bent |
| Muffler | Super 10 series performance |
| Tailpipes | Dual 2.50-inch mandrel-bent |
| Tips | 4.00-inch black ceramic coated stainless steel |
| Exit options | Rear under bumper, or side behind rear tires |
| Drivetrain | 2WD and 4WD |
| Engines | 2.7L and 3.5L EcoBoost, 3.5L TiVCT, 5.0L |
Vehicle fitment
It fits the 2015-2019 Ford F-150 in King Ranch, Lariat, Limited, Platinum, SSV, XL and XLT trims. It fits all 2WD and 4WD wheelbases except Standard Cab, Short Bed models.
Confirm fit for your vehicle’s year, model and trim before ordering.
Installation notes
This is an easy fit that can be done at home with the included hardware. Let the exhaust cool and support the truck safely before working underneath it.
What’s included
The kit includes the 3.00-inch mandrel-bent inlet tube, Super 10 series performance muffler, dual 2.50-inch tailpipes, 4.00-inch black ceramic coated tips, your chosen tailpipe exits, and all necessary parts and hardware.
