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Flowmaster Outlaw Axle-Back Exhaust w/ Black Tips (15-20 EcoBoost w/o Active Exhaust)

Item 404843
Market Price $553.99 You Save 12% ($64.04)
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$489.95 (each)

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    Features & Details

    • Powerful Outlaw Series Axle-Back Exhaust
    • Offers a Raspy, Muscular Sound
    • Two Flowmaster Outlaw Mufflers
    • 3.50-Inch Mandrel-Bent Tubing
    • Durable Stainless Steel Build
    • Two Hardcore Black Tips
    • Moderate Skills Required for Installation
    • Limited Lifetime Warranty
    • Not Compatible with Active Exhaust
    • Fits 2015-2020 Ford Mustang EcoBoosts Without Active Exhausts
    Raspy Sound. Ensure your 2015-2020 Ford Mustang EcoBoost's sound matches its muscular appearance by replacing its boring stock exhaust with Flowmaster's Outlaw Series Axle-Back Exhaust with Black Tips. This high-quality exhaust is created to provide a raspy, aggressive noise that will intimidate other drivers on the street and track, giving your Mustang a serious boost in overall style.

    Upgraded Performance. Not only does this Outlaw Series Axle-Back Exhaust offer a dramatic improvement in exhaust sound, but it also enhances your Pony's performance by increasing its horsepower and torque. By giving your Pony that extra boost it needs, you'll never have to worry about being left behind on the street or track again.

    Hardcore Construction. Featuring one of the smallest and lightest race mufflers to date, this exhaust is created for an unbeatable performance as well as outstanding durability and longevity. With 3.50 inch, mandrel-bent, stainless steel tubing as well as 2 hardcore, stylish black tips, this exhaust is guaranteed to impress in more ways than one.

    Installation. Securing this exhaust takes about 1 hour. Moderate mechanical skills are recommended.

    Warranty. Featuring a limited lifetime warranty, this exhaust is protected against defects. Some limitations apply, so check out the full warranty for details.

    Application. Flowmaster's Outlaw Series Axle-Back Exhaust with Black Tips is created to perfectly fit all 2015-2020 Ford Mustang EcoBoosts without the Active Valve Exhaust.

    Fitment: 2015 2016 2017 2018 2019 2020 Details

    MPN# 817823

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Axle-Back Exhaust
    Installation Info
    Will it fit my Mustang?

      Customer Photos (3) Submit Your Photo

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        Questions & Answers (5)

        5 Top Rated Questions

        Is this compatible with a convertible?

        • This will work for both coupes and convertibles, as long as they do not have the active exhaust.

        Helpful (0)

        Does this installation require cutting?

        • The installation ofFlowmaster Outlaw Axle-Back Exhaust w/ Black Tips will require cutting to remove the factory exhaust system. 

        Helpful (0)

        Isn't this the same Outlaw axle back but with black tips? the sound should be the same as the Chrome tips correct?

        • Yes, the exhaust sound between the two kits will be the same.

        Helpful (0)

        Will this Flowmaster Outlaw Axle-Back Exhaust w/ Black Tips be legal in the state of California?

        • Since the Flowmaster Outlaw Axle-Back Exhaust is installed after the vehicles catalytic converters, this can be used on highway in the state of California.

        Helpful (0)

        Are ya'll going to upload a video on how it sounds?

        • We do upload videos as often as we can. You should expect to see an exhaust video on this product either on our YouTube channel hotlap or on the site at one time.

        Helpful (0)
        Post Your Question

          Customer Reviews (8) Write a Review

          Overall Rating 4.9

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:$100-$250

          • Loudness / Volume 4.285714 4.3
          • Exhaust Note 4.428571 4.4
          • Fit & Finish 4.857143 4.9
          • Bang For Your Buck 4.714286 4.7

          • 5/5

            Installation Time: Less than 1 Hour

            August 19, 2019

            Amazing sound

            This is the perfect exhaust if you want you ecoboost to sound good while not being too loud but have some roar when you let it open it up. The sound is just amazing and sounds no where near a 4 cylinder. 10/10 for sure.


            Year: 2018 Submodel: EcoBoost

            Helpful (0)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            August 08, 2019

            Love it

            I am super happy with this exhaust. It gives the Ecoboost a more aggressive sound without being too loud. I didn't want the neighbors to hate me. It does have a little bit of drone but I usually have the stereo loud enough to cover it up on the highway. When I really want to hear it I have the windows down and no stereo and it sounds great. I had a shop weld it instead of putting it on with clamps.


            Year: 2018 Submodel: EcoBoost

            Helpful (0)

          • 4/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            February 07, 2019

            Awesome sound

            Definitely on the louder side. Paired it up with the Flowmaster Y-pipe and it has a Pretty deep tone at idle. When you take off you can definitely hear the turbo though. Not a bad sound and will definitely turn heads.


            Year: 2016 Submodel: EcoBoost

            Helpful (2)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: 0-$100

            January 09, 2019

            Amazing Exhaust!

            Definitely recommend to anyone looking to get more volume and an aggressive tone out of there ecoboost mustang! Great Raspy crackles on deceleration and nice little throttle response increase!


            Year: 2016 Submodel: EcoBoost

            Helpful (3)

          • 5/5

            Installation Time: Less than 1 Hour

            December 13, 2018


            Sounds better than expected, along with the resonator delete! Beast!!


            Year: 2016 Submodel: EcoBoost

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            December 03, 2018

            very easy to install

            super simple to install 1 hour top wit basic tool, it sounds deep but no too loud , no drone at all up to 3k rpm after that is pretty nice deep sound .


            Year: 2018 Submodel: EcoBoost

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            November 30, 2018


            Super pleased with this product. Highly recommend this exhaust for a nice loud, gutteral rumble.


            Year: 2008 Submodel: GT

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            October 06, 2018

            Great but loud

            These sounds wonderful and you’re going to notice it in the cabin. Pretty minimal/no drone though! If you’re looking for exhaust with a deep growl, these are definitely worth it.


            Year: 2018 Submodel: EcoBoost

            Helpful (9)

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