SKU: 83666477228

2018-2023 Ford Mustang Axle-Back Exhaust Flowmaster Stainless Steel

Sale price$854.98 Regular price$949.98
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

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Description

2018-2023 Ford Mustang Axle-Back Exhaust Flowmaster Stainless SteelOverview: This Flowmaster American Thunder Axle back exhaust system is for 2018 2023 Ford Mustang GT coupes and convertibles with the 5. 0L engine and Factory Active Performance Exhaust Option. System features include a pair of specially designed Outlaw series mufflers giving you high flow with a moderately aggressive exterior and interior tone when the valves are closed, and an aggressive "wide open" exterior sound level when you open up the valves.

Overview:

This Flowmaster® American Thunder® Axle-back exhaust system is for 2018-2023 Ford Mustang GT coupes and convertibles with the 5.0L engine and Factory Active Performance Exhaust Option. System features include a pair of specially designed Outlaw® series mufflers giving you high flow with a moderately aggressive exterior and interior tone when the valves are closed, and an aggressive "wide open" exterior sound level when you open up the valves. Other features include 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 304 stainless steel tips for an aggressive look that demands attention, the same as the exhaust note. Includes all necessary parts, hardware and detailed instructions for an easy installation you can do at home. Covered by our Lifetime Limited Warranty. Note: Fits both coupes and convertibles.

Features:

  • Mandrel-bent Dual 3.00-inch Stainless Steel Tubing
  • Scavenger Series X-pipe for Maximum Power
  • Includes Active Exhaust Valves in Tailpipes
  • Deep Aggressive Exterior/Interior Tone
  • Race-proven Outlaw Series Mufflers
  • Exits within the Factory Bezels
  • Stainless Steel Construction
  • Lifetime Limited Warranty
  • Flowmaster Quality
  • Specs:

  • Brand: Flowmaster
  • CARB (California) Compliant: Yes
  • Catalytic Converter Included: No
  • Catalytic Converter Quantity: 0
  • Clamping Type: Flat Band
  • Clamps Included: Yes
  • Emission Code: 5
  • Exhaust Series: American Thunder
  • Exhaust Tip Color: Silver
  • Exhaust Tip Connection: Welded
  • Exhaust Tip Cut: Angled
  • Exhaust Tip Edge: Angle Cut
  • Exhaust Tip Finish: Polished
  • Exhaust Tip Material: 304 Stainless Steel
  • Exhaust Tip Quantity: 4
  • Exhaust Tip Shape: Round
  • Exhaust Tip Wall: Double Wall
  • Exit Style: Dual Out Rear
  • Finish: Natural
  • Gasket Or Seal Included: No
  • Grade Type: Performance
  • Hangers Included: Yes
  • Heat Shield Included: No
  • Inlet Type: Clamp-On
  • Main Piping Diameter: 3
  • Mount Type: Uses Factory Hangers
  • Mounting Bracket Included: No
  • Muffler (Left) Body Height: 5
  • Muffler (Left) Body Length: 11.375
  • Muffler (Left) Body Width: 12
  • Muffler (Left) Type: Reflection
  • Muffler (Right) Body Height: 5
  • Muffler (Right) Body Length: 11.375
  • Muffler (Right) Body Width: 12
  • Muffler (Right) Type: Reflection
  • Muffler Body Height: 5
  • Muffler Body Length: 11
  • Muffler Body Material: 409 Stainless Steel
  • Muffler Body Shape: Oval
  • Muffler Body Width: 12
  • Muffler Color: Black
  • Muffler Finish: Black High-Temperature Paint Finish
  • Muffler Flanged Inlet: No
  • Muffler Flanged Outlet: No
  • Muffler Included: Yes
  • Muffler Inlet Connection: Slip-Fit
  • Muffler Inlet Inside Diameter: 3
  • Muffler Inlet Location: Side
  • Muffler Inlet Outside Diameter: 3.13
  • Muffler Outlet Diameter: 3
  • Muffler Outlet Location: Dual
  • Muffler Outlet Quantity: 2
  • Muffler Overall Length: 49.5
  • Muffler Part Number: Kit Only
  • Muffler Quantity: 2
  • Muffler Series: 60 Series
  • Muffler Type: Reflection
  • Pipe Color: Silver
  • Pipe Material: 409 Stainless Steel
  • Sound Level: Aggressive / Moderate
  • Spring Bolt Kit Included: No
  • Tail Pipe Outlet Outside Diameter: 2.5
  • Tail Pipe Quantity: 2
  • Tail Pipe Tapered Outlet: No
  • Tip Logo: Embossed
  • Type: Axle-back
  • Valve Actuator Included: No, Reuse OEM
  • Valve Included: Yes
  • Valve Type: OEM-Style Valves
  • Part Number: 817799
  • Applications:

    • 2018-2023 Ford Mustang 307 CID

    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.
    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 83666477228

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    Reviewed in the United States on August 15, 2025
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    D. W.
    Draper, US
    ★★★★★ 5
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    Reviewed in the United States on February 1, 2026
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    Nikkycollado
    Omaha, US
    ★★★★★ 5
    Great fit
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    Reviewed in the United States on April 24, 2026
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    Dallas, US
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    I'd buy it again
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