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Flowmaster

Flowmaster Outlaw Axle-back Exhaust System

2018-2021 Mustang GT 5.0L with Factory Active Performance Exhaust Valves.

Part # 817825 Be the first to write a review
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This Flowmaster® Outlaw Axle-back exhaust system is specifically designed for the 2018-2021 Ford Mustang GT coupes and convertibles with the 5.0L engine and Factory Active Performance Exhaust Option. System features include a pair of our race-proven Outlaw® Series mufflers for a very aggressive exterior sound level with a noticeable interior tone and large 3.00-inch mandrel-bent 409S stainless steel tubing for high flow, durability, and longevity. Add to that, a pair of our high-quality valves to accommodate the factory exhaust actuators for when you really want to open up the sound. The system is finished off with quad 4.00-inch polished stainless steel tips for an aggressive look that demands attention, the same as the exhaust note from the Outlaw Series mufflers. Includes all necessary parts, hardware and detailed instructions for an easy installation you can do at home. Covered by our Lifetime Limited Warranty.

Features:

  • For Vehicles With Active Performance Exhaust Option
  • Polished Quad 4.00-inch 304 Stainless Steel Tips
  • Aggressive Race-proven Outlaw Mufflers
  • Dyno-tuned for Maximum Performance
  • Uses the Factory Hanger Locations
  • Full Stainless Steel Construction
  • Straight-through Muffler Design
  • Easy Installation

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
Catalytic Converter IncludedNo
Emission Code5
Exhaust SeriesOutlaw
Exit PositionDual Out Rear
Heat ShieldNo
Material409 Stainless Steel
Mount TypeUses Factory Hangers
Muffler Body Length (in)5.5
Muffler ColorBlack
Muffler FinishPainted
Muffler Inlet Diameter (in)3
Muffler Inlet LocationCentered
Muffler Material409S Stainless Steel
Muffler Outlet Diameter (in)3
Muffler Outlet LocationCentered
Muffler Overall Length (in)49.5
Muffler Part NumberKit Only
Muffler Quantity2
Muffler SeriesOutlaw
Muffler ShapeRound
Muffler TypeReflection
Product TypeExhaust System
Single DualDual
Sound LevelAggressive
System TypeAxle-back
Tip CutAngle
Tip Diameter (in)4
Tip Edge StyleCut
Tip FinishBlack Ceramic
Tip Length (in)5.25
Tip LogoEmbossed
Tip Material304 Stainless
Tip Quantity4
Tip ShapeRound
Tubing Diameter (in)3
Tubing Material409S Stainless Steel
UPC700042038213
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 Chemical Name 1Lead
California Proposition 65 Chemical Name 2Chromium
California Proposition 65 RequiredYes
Part Number817825
5

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.

Fits 2018-2021 Mustang GT 5.0L Coupes & Convertibles with Factory Active Performance Exhaust Valves.
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