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Flowmaster

Flowmaster Outlaw Axle-Back Exhaust System

Fits 2024-2025 Ford Mustang GT 5.0-liter and EcoBoost 2.3-liter, Outlaw Axle-Back 3.0-inch Stainless Steel Exhaust System, 4.00-inch Polished Quad Tips with Valves

Part # 818164 Be the first to write a review

Flowmaster Outlaw Axle-Back Exhaust System

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MSRP $1,687.95
$1,348.95
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5

Emissions

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.

See Emissions Details
Flowmaster introduces our Outlaw Axle-back exhaust system for the 2024-2025 Ford Mustang GT with the 5.0-liter engine or EcoBoost 2.3-liter engine and the factory performance exhaust option. This system uses the Outlaw style mufflers for an aggressive exhaust tone and increased performance. Maximum dyno gains of up to 17 hp and 17 lb-ft were measured at the rear wheels. 3.00-inch mandrel bent 409 stainless steel tubing is used to maximize exhaust flow and durability. Quad 4.00-inch polished stainless steel tips are used to add a custom look to this iconic vehicle. All of the necessary hardware is included and factory mounting locations are used for an easy installation. Fits both coupes and convertibles. Backed by Flowmaster's Lifetime Limited Warranty.

Features:

  • Max increases of up to 17 hp and 17 lb-ft over the stock exhaust at the rear wheels
  • Outlaw series performance muffler offers a deep powerful sound and increased performance
  • 409 stainless steel construction delivers extra durability and improved long-term corrosion resistance
  • Uses factory hanger locations for easy installation
  • 3.00-inch 16-gauge mandrel bent stainless steel tubing helps maintain maximum exhaust flow for better power
  • Includes all necessary hardware for an at home installation
  • Quad 4.00-inch polished stainless steel tips add a custom look
  • Lifetime Limited Warranty
Brand Flowmaster
Catalytic Converter Quantity0
CategoryExhaust
Clamping TypeRound Band
Clamps IncludedYes
Emission Code5
Exhaust SeriesOutlaw
Exhaust Tip Quantity2
Exit PositionDOR
Exit StyleDual Out Rear
FinishNatural
Grade TypePerformance
Hangers IncludedYes
Main Piping Diameter3.00 IN
Material409 Stainless Steel
Mount TypeUses factory hangers
Muffler Body Length5.50 IN
Muffler ColorBlack
Muffler FinishBlack High-Temperature Paint Finish
Muffler Inlet Diameter3.00 IN
Muffler Inlet LocationCenter
Muffler Material409 Stainless Steel
Muffler Outlet Diameter3.00 IN
Muffler Outlet LocationCenter
Muffler Overall Length6.50 IN
Muffler Part NumberKit Only
Muffler Quantity2
Muffler SeriesOutlaw
Muffler ShapeRound
Muffler TypeReflection
part typeExhaust System Kit
Pipe Material409 Stainless Steel
Product TypeExhaust System
Single DualDual
Sound LevelAggressive
Spring Bolt Kit IncludedNo
Sub CategoryExhaust and Tail Pipes
System TypeAxle-back
Tip CutAngle
Tip Diameter4.00 IN
Tip Edge StyleMachined
Tip FinishPolished
Tip Length5.25 IN
Tip LogoEmbossed
Tip Material304 Stainless Steel
Tip Quantity2
Tip ShapeRound
Tip StyleDouble Wall
Tubing Diameter3.00 IN
Tubing Material409 Stainless Steel
TypeAxle-Back
Valve Actuator IncludedNo, Reuse OEM
Valve IncludedYes
Valve TypeOEM-Style Valves
UPC090127844274
California Proposition 65 Chemical NameChromium (hexavalent compounds)
Nickel (Metallic)
California Proposition 65 RequiredYes
Part Number818164
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.
Instructions - 818164_instructions.pdf
Instructions - fm_warranty_general.pdf

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