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Flowmaster Outlaw Extreme Cat-back Exhaust System

2015-2020 Ford F-150, all 2.7L/3.5L Ecoboost, 3.5L Ti VCT and 5.0L engine. 2/4 WD, all Wheelbases

Part # 817917 Be the first to write a review
Estimated shipping date: 03/09/2022
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Introducing our new Outlaw® Extreme Cat-back exhaust system for all 2015-2020 Ford F-150 with 2.7L/3.5L Ecoboost, 3.5L Ti VCT and 5.0L engines. This system delivers the ultimate aggressive exhaust note that will get you noticed. The system slips on the back side of the catalytic converter tubing and features a 3.00-inch race-proven Outlaw muffler and a mandrel-bent single dump style turndown exiting under the bed, for the ultimate deep and aggressive sound. The system is manufactured from 409 stainless steel for durability and uses the factory hanger locations for a quick and easy installation. As a Flowmaster® Outlaw extreme system, this will deliver a very aggressive sound both inside and outside the truck. Includes all necessary hardware and detailed instructions for a quick and easy installation. Notes: Fits all 2/4 wheel drive models and all wheelbases.


  • Race Proven Outlaw Muffler Technology
  • Extreme Sound for Extreme Lifestyles
  • Uses the Factory Hanger Locations
  • Stainless Steel Construction
  • Quick & Easy Installation
  • Lifetime Limited Warranty

About Flowmaster

Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound.

Brand Flowmaster
Emission Code5
Exhaust SeriesOutlaw Extreme
Exit PositionSingle Out - Dump
Material409 Stainless Steel
Mount TypeUses Factory Hangers
Product TypeExhaust System
Single DualDual
Sound LevelAggressive
System TypeCat-back
Tubing Diameter (in)3
Tubing Material409S Stainless Steel
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817917

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.

2015-2020 Ford F-150, all 2.7L/3.5L Ecoboost, 3.5L Ti VCT and 5.0L engine. 2/4 WD, all Wheelbases

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