Fits 2021-2026 Ford F-150 with 2.7, 3.5 and 5.0-liter non-PowerBoost engines with factory dual tailpipes
- Finish High-Temperature Paint
- Material 409 Stainless Steel
Questions about fitment? Live chat or call 866-235-4715
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- Free shippingMost orders $500+
- 30-day returnsSee policy
- Warranty supportWe work with the maker
Questions about fitment?
Talk to a TRU specialist
We’ll help you verify fitment before you buy.
Veteran-owned · Austin, Texas · Mon–Fri 9:30a–11:00a & 1:00p–5:30p CT
Important notes before you order
- This system replaces ONLY the Factory muffler and over axle pipes and reuses the factory dual tail pipes and tips. Does not fit PowerBoost hybrid models. Does not fit models with OEM active exhaust option.
Specifications
| Brand | Flowmaster |
|---|---|
| Part number | 818171 |
| Body Height | 4.00 IN |
| Body Length | 6.50 IN |
| Body Material | 409 Stainless Steel |
| Body Width | 9.50 IN |
| Brand | Flowmaster |
| Category | Exhaust |
| Clamping Type | Flat Band |
| Clamps Included | Yes |
| Emission Code | 5 |
| Exhaust Series | Outlaw |
| Exhaust Tip Quantity | Sold Separately |
| Exhaust Tip Style | Not Included |
| Exit Style | OEM |
| Finish | High-Temperature Paint |
| Gasket Or Seal Included | No |
| Grade Type | Performance |
| Hangers Included | Yes |
| Heat Shield Attached | No |
| Inlet Inside Diameter | 2.75 IN |
| Inlet Location | Center |
| Inlet Outside Diameter | 2.88 IN |
| Inlet Quantity | 1 |
| Inlet Type | Slip-Fit |
| Main Piping Diameter | 3.00 IN |
| Material | 409 Stainless Steel |
| Mount Type | Uses factory hangers |
| Muffler Body Length | 6.50 IN |
| Muffler Color | Black |
| Muffler Finish | Black High-Temperature Paint Finish |
| Muffler Inlet Diameter | 3.00 IN |
| Muffler Inlet Location | Center |
| Muffler Material | 409 Stainless Steel |
| Muffler Outlet Diameter | 3.00 IN |
| Muffler Outlet Location | Dual |
| Muffler Overall Length | 12.20 IN |
| Muffler Part Number | Kit Only |
| Muffler Quantity | 1 |
| Muffler Series | 10 Series |
| Muffler Shape | Oval |
| Muffler Type | Chambered |
| Outlet Inside Diameter | 3.00 IN |
| Outlet Location | Dual |
| Outlet Outside Diameter | 3.13 IN |
| Outlet Quantity | 2 |
| Outlet Type | Slip-Fit |
| Overall Length | 55.20 IN |
| part type | Exhaust Muffler Assembly |
| Pipe Material | 409 Stainless Steel |
| Product Type | Exhaust System |
| Single Dual | Dual |
| Sound Level | Aggressive |
| Spring Bolt Kit Included | No |
| Sub Category | Mufflers |
| System Type | Direct-fit Muffler |
| Tubing Diameter | 3.00 IN |
| Tubing Material | 409 Stainless Steel |
| Type | Direct-fit Muffler |
| Warning | California Proposition 65 |
California Proposition 65 warning applies to this product. www.P65Warnings.ca.gov
Features
- Lifetime limited Warranty
Installation
Free install support from the Trucks R Us tech team, for you or your shop.
Overview
This Flowmaster® Outlaw Direct-Fit Muffler system for the 2021-2026 Ford F-150 trucks with the 2.7, 3.5 or 5.0-liter engines is manufactured using durable 409 stainless steel throughout and features 3.00-inch mandrel bent pipes for optimum exhaust gas flow. A Flowmaster Outlaw Series muffler is used for an aggressive sound level and maximum performance. Performance increases on the dyno revealed an increase of 16 hp and 21 ft/lbs. at the rear wheels. This system connects directly to the factory dual tail pipes and uses all the existing factory hangers. Includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty.
Questions
Will this fit my truck?
Select your truck at the top of the page and the fit check will confirm it. If your exact trim is not listed, call 866-235-4715 or live chat and a fitment specialist will check it before you order.
Do you help with installation?
Yes. Our technical team helps you or your shop with installation and troubleshooting after delivery, on top of the manufacturer’s support.
What if the part has a problem?
We work the warranty claim with the manufacturer on your behalf, within the manufacturer’s warranty policy.
Can I return it?
Most items can be returned within 30 days. See our return policy for details.
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About Flowmaster
Manufacturer of performance exhaust systems, mufflers, performance air intakes, catalytic converters, race mufflers, headers and numerous exhaust accessories for late model cars, trucks, off-road, Jeeps, SUV’s, classic muscle cars, powersports vehicles and more. Flowmaster® gives you lots of exhaust choices... Shop all Flowmaster