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2009-14 Ford F-150 5.4L - Outlaw Extreme Cat-back Exhaust System 817707YouTube Button

Flowmaster Outlaw Extreme Cat-back Exhaust System

2009-2014 Ford F-150 trucks with 4.6L, 5.0L and 5.4L engines.

PART# 817707

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Aggressive sound


The new Flowmaster Outlaw Extreme Cat-back exhaust system is for 2009-2014 Ford F-150 trucks with the 4.6L, 5.0L, and 5.4L engines. Do you like attention and want to be heard? These kits deliver the ultimate in aggressive sound by using a 3.00-inch race-proven Outlaw muffler and a 3.00-inch mandrel-bent "dump-style" turndown for a very deep aggressive sound both inside and outside the truck. The system fits both 2 and 4 wheel drive trucks, and all wheelbases. Constructed with durable 409S stainless steel and uses the factory hanger locations, so installation is a breeze. The system is covered by our Lifetime Limited Warranty and includes all of the necessary hardware for a quick and easy installation you can do at home.


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


Catalytic Converter IncludedNo
Emission Code5
Exhaust SeriesOutlaw Extreme
Exit PositionSingle Out - Dump
Heat ShieldNo
Inlet Diameter (in)3
Material409 Stainless Steel
Mount TypeUses Factory Hangers
Muffler Part NumberKit Only
Muffler Quantity1
Muffler SeriesOutlaw
Muffler TypeWelded Baffle
Outlet Diameter (in)3
Product TypeExhaust System
Single DualSingle
Sound LevelAggressive
System TypeCat-back
Tip CutSquare
Tip Diameter (in)3
Tip Edge StyleCut
Tip FinishNatural
Tip Length (in)11
Tip LogoNone
Tip Material409 Stainless Steel
Tip Quantity1
Tip ShapeRound
Tubing Diameter (in)3
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817707



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.

Tech Resources

2009-2014 Ford F-150 trucks with 4.6L, 5.0L and 5.4L engines.


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