Free shipping on ALL orders!* - Details
1986-04 Ford Mustang GT, LX, Cobra 4.6L, 5.0L - Outlaw Extreme Cat-back Exhaust SystemYouTube Button

Flowmaster Outlaw Cat-back Exhaust System

Fits 1986-2004 Ford Mustang, GT, LX, and Cobra models with a 4.6L or 5.0L engine.

PART# 817682

Be the first to write a review
$526.00   Suggested Retail
$472.95   Your Price
Estimated shipping date: 12/11/2020
Email Me When Available
Free Shipping
Add to Wish List

Starting at $42 a month with Learn More
Aggressive sound


Flowmaster's race-oriented Outlaw® Extreme Cat-back system is designed for the enthusiast looking for the maximum sound level and performance from their 1986-2004 Mustang GT, LX and Cobra models with either a 4.6L or 5.0L engine. The turn-down tailpipes drop at the rear of the transmission and eliminates full length tailpipes to maximize the sound level and allow for extra clearance for wide tires and modified suspensions. This mandrel-bent system is designed to mount behind the factory catalytic converters, or most OEM style aftermarket H-pipes. The Outlaw Extreme system delivers a super aggressive interior and exterior tone and is suited to the enthusiast who wants the most aggressive components they can purchase. Like all Flowmaster® systems, the benefits include improved throttle response and power. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Note: Ideal for off-road racing use.


  • Dyno Tuned for Maximum Performance
  • True Dual System with Turndowns
  • Race Proven Outlaw Mufflers
  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Flowmaster Quality


Catalytic Converter IncludedNo
Emission Code5
Exhaust SeriesOutlaw Extreme
Exit PositionDual Out Dumps
Heat ShieldNo
Material409 Stainless Steel
Mount TypeUses Factory Hangers
Muffler FinishStainless Steel
Muffler Inlet Diameter (in)2.5
Muffler Outlet Diameter (in)2.5
Muffler Part NumberKit Only
Muffler Quantity2
Muffler SeriesOutlaw
Muffler ShapeRound
Muffler TypeWelded Baffle
Product TypeExhaust System
Single DualDual
Sound LevelAggressive
System TypeCat-back
Tip CutSquare
Tip Diameter (in)2.5
Tip Edge StyleCut
Tip FinishNatural
Tip Length (in)6
Tip MaterialStainless Steel
Tip Quantity2
Tip ShapeRound
Tubing Diameter (in)2.5
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number817682



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

Fits 1986-2004 Ford Mustang, GT, LX, and Cobra models with a 4.6L or 5.0L V8 engine. Recommended for off-road, racing use.


We Suggest
    Also Bought

        *Free Shipping & Handling only offered to the contiguous US on orders over $100, excludes clearance parts and oversized packages.

        Some parts are not legal for use in California or other states with similar regulations.

         X  Holleydays 2020 Free Shipping
         X  Holleydays 2020 Free Shipping