SKU: 83666477228

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

Sale price$854.98 Regular price$949.98
Save 10%

Pay in installments of $237.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 8 - Aug 13

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

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

    Discover Niche Categories That Outsell

    Top-Converting Item to Boost Your Average Order

    4.7 ★★★★★
    Based on 21 reviews
    Sort
    Highest Rating
    Newest First
    Oldest First
    Product Reviews
    M
    Verified Purchase
    M Denise
    Whiting, US
    ★★★★★ 5
    Treats and plenty of ball throwing with these doggie toy
    Size: Medium (2.5"), Style: Fetch Pack 1
    I have actually purchased these twice already. I love the one that glows in the dark but it still got lost in my yard lol. My dog is a big breed half pitt/Labrador so she did chew through one of them already. I play ball with her every single day but I DO have to take them away from her because she will destroy them. They are great to add in treats as well, that was one of the my favorite things about them as well. They do last just if you have an over zealous chewer do not let them keep them for long periods of time. They are a good value for the price. Buy them your dog will love it!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on August 2, 2025
    W
    Verified Purchase
    Who Let the Dogs Out
    Natrona Heights, US
    ★★★★★ 5
    My Female GSD loves
    Size: Medium (2.5"), Style: Fetch Pack 1, Size: Medium (2.5"), Style: Fetch Pack 1
    Shasta is my smallest. Six in December (2025) along with her brother. She’s 100 lbs and outside, completely ball driven see last picture. Don’t let the size (2.5”) of these Chuck-It balls deter you. If your larger Breed dog has any orthopedic issues, has already torn their ACL etc, one has arthritis but wants to play. This size is perfect! Shazzy was born with several ortho issues. I don’t throw balls distance but right to her. This size and lighter weight assure even when Shazzy is spazzy w excitement, she’ll catch the ball mid air. The green balls are softer, and glow in the dark. In summer we can play well past dusk and I can see them! Her personality shows in the pictures. Playing ball is part of her. These balls are just perfect for her situation. Somehow they disappear, she loves making baskets, puts them in my tractor bucket, or my gardening bucket..then get put in burn pile, trash etc. I keep replacing them because she’d look day and night if we actually ran out!! 🙏✝️👍🏼👍🏼
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on September 3, 2025
    T
    Verified Purchase
    Trevor
    Battle Creek, US
    ★★★★★ 5
    Smalls dog love it
    Color: Gray
    Honestly took them a while to figure it out with my dumb Pomeranians but easy to clean nice size for SMALL dogs. Pretty overpriced for how small they are to be very honest.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on January 18, 2026
    R
    Verified Purchase
    Ravioli
    Houston, US
    ★★★★★ 4
    Is good but the tray needs adjustments for the dogs nails not to get stuck
    Color: Gray
    Is good just only problem is the wholes in the tray my puppy nails get stuck in it so I just left the bottom tray and put a pad over it
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 22, 2026
    S
    Shawsown
    Phoenix, US
    ★★★★★ 3
    Okay little puppy pee plate. But some diy may be required.
    Color: Gray
    This little pup pee station is pretty good. With a little caveat. There's some pros & cons. Pros: The back splash wall is very helpful. Keeping pee from going off the plate. But only as long as the pup aims that way. Which is why the little upright tube thing is helpful. I suggest placing it in the middle as close to the back wall as possible. Which leads to another pro. The little stick thing. It's hollow. A trick to help encourage your pup to use this is to place something your pup has peed on inside of that hollow tube. Or, you can see a bit on some cotton swabs & put them in there. The scent encourages your pup to pee there. Another pro is that a medium size pee pad will go over the edges of the plate. You can either fold the pad in, or leave it overhanging to catch stray shots. Cons: It is a little small. So this will only work for the smallest of pups. Another huge con is the grate on top. It allows pee to go through to the pad. But, most pups will refuse to step on this thing. So you'll likely have to get some of that draining fake grass to place on top of it. So, in the end, it's functional, but you'll likely have to do some diy to get it there.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on October 24, 2025

    recommand products