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Axle-Back Exhaust (15-19 EcoBoost w/o Active Exhaust)

Market Price $349.99 You Save 10% ($35.00)
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$314.99 (each)

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  • Item 398969

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Ship to: Ashburn - 20149
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    Features, Video & Details

    • Throaty Rumble Tone
    • Enhances Exhaust Flow Thus More Torque and Horsepower
    • Flow Path Chambered Muffler
    • 2.25 inch Piping Size
    • Dual 4 inch Exhaust Tips
    • T304 Stainless Steel Construction
    • Super Lightweight Design
    • Stainless Steel Polish
    • Direct Bolt-On Installation
    • Not Compatible with Active Exhaust
    • Fits 2015 to 2019 Ford Mustang EcoBoost Models

    Review & Installation Video

    Review & Install Video

    Throaty Rumble Tone. NXT Step Performance Axle-Back Exhaust features a wide and free-flowing tube design that enhances air flow thus delivering a booming exhaust growl. The chambered muffler makes the sound even more intimidating. The unmistakable boxter sound produced by the exhaust kit similarly makes it suitable for racing applications.

    Better Performance. By enhancing exhaust flow, the kit significantly boosts your EcoBoost’s rear torque and horsepower. It gives you an average of 15-20 extra HP. It is also designed to remarkably boost your Mustang’s turbo response thus giving you a better RPM. You are also assured of better fuel economy since the kit lowers exhaust temperatures thus increasing engine power. Since the kit doesn’t contain components that may burn out with continued use, the performance gains will be maintained for ages.

    High-Grade Construction. NXT Step Performance Axle-Back Exhaust is fashioned from industrial-grade mandrel bent 304 stainless steel that is corrosion and rust resistant for superior strength. Its pipes are similarly made from lightweight stainless steel. The entire kit is coated with a stainless steel finish to enhance its looks and durability. What’s more, the finish is scratch resistant, and gives the Axle Back Exhaust a phenomenal appearance .

    Bolt-On Installation. NXT Step Performance Axle-Back Exhaust is compatible with your Mustang’s OEM clamps. It’s slip-on design means that you can install it without making modifications to your EcoBoost. Only basic hand tools are needed.

    Warranty. The kit is backed by a limited lifetime warranty against structural defects after inspection.

    Application. NXT Step Performance Axle-Back Exhaust fits all 2015 to 2019 Ford Mustang EcoBoost Models without the Active Valve Exhaust.

    Fitment: 2015 2016 2017 2018 2019 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (2) Muffler Assemblies
    • Hardware Kit
    Installation Info
    Will it fit my Mustang?

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    Questions & Answers (7)

    5 Top Rated Questions

    Is this compatible with a 2016 Ecoboost Convertible and if so does it require cutting the stock exhaust? Can the stock exhaust be ever put back on?

    • This Nxt Step Performance Axle-Back Exhaust will fit with on a convertible and the factory exhaust must be cut. The stock exhaust could be put back on with a clamp, but it will not fit exactly as it did before.

    Helpful (1)

    Will this fit with the FlowMaster Y-Pipe that is also sold on the website?

    • The Nxt Step Performance Axle-Back Exhaust will be compatible with the Flowmaster Y-Pipe.

    Helpful (0)

    One answer says cutting is not required, another says cutting is required. What is the right answer?

    • From my understanding, cutting of the factory exhaust will be required.

    Helpful (0)

    Hey I've seen ppl in the review session say they cut the exhaust in order to fit these axle back onto it (but it says bolt on on the description), do I needa cut the exhaust on my fastback ecoboost?

    • These will require cutting the factory exhaust to be installed.

    Helpful (0)

    What is the axel back piping size? Is it 2 1/4 in?

    • The piping size for this exhaust is 2.5".

    Helpful (0)
    Post Your Question
    2 More Questions
    Are there any instructions on how to put these on? 1 answer
    This is the only axle back exhaust I’ve found that says “bolt-on”. Does that mean there is no cutting? Or does it mean you just bolt/clamp on once you cut off the stock pipe? 1 answer

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    Customer Reviews (7) Write a Review

    Overall Rating 4.6

    out of 5 stars

    Installation Time:Less than 1 Hour

    • Loudness / Volume 4.142857 4.1
    • Exhaust Note 4.857143 4.9
    • Fit & Finish 4.571429 4.6
    • Bang For Your Buck 4.714286 4.7

    • 5/5

      Installation Time: Less than 1 Hour

      September 10, 2018


      Doesn't sound as ricer as other exhausts. 10/10 would recommend


      Year: 2018 Submodel: EcoBoost

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      August 07, 2018

      Great bang for your Buck

      I recently went big turbo with my Ecoboost and had an upgraded 3" down pipe installed, previous to the build I had gotten rid of the resonator and did a muffler delete and still had the OEM cat and the exhaust note was perfect for a pretty much straight pipe set up. After the install with a bigger downpipe and cat delete the exhaust note was way to loud and way raspy once you hit 3k RMP. After looking at all the different mufflers and differences in price I chose to go with Nxt step mufflers and I am so glad I did! exhaust note is perfect with that deep rumble and best part about it? NO MORE RASPY exhaust note. Quality of the mufflers themselves are beautiful with nice big 4" chrome tips that stand out and install was a piece of cake with a simple cut and clamp with no welding needed. Thanks AM with another great product!


      Year: 2015 Submodel: EcoBoost

      Helpful (1)

    • 4/5

      Installation Time: Less than 1 Hour

      July 24, 2018

      Great exhaust

      Give the ecoboost a great look with the polished chrome tips. It deepens the tone of the exhaust without it being super loud. Gives it a great, rich sound.


      Year: 2017 Submodel: EcoBoost

      Helpful (4)

    • 4/5

      Installation Time: Afternoon

      June 09, 2018

      Good Sound, Good Price

      I'll start with the positives for this review and disclose that I am running a stock system with the factory resonator and downpipe still in place. Firstly, if you are looking for an exhaust for your Ecoboost that isn't crazy loud or expensive, (but still reminds you and other folks that you are indeed driving a performance car) then this system should be near the top of your list. Nice, deep rumble upon start-up and continuous through idle RPMs. It doesn't blow you away with regular driving, but open the throttle and this thing will scream with lots of turbo noise. Very little to no drone at highway speeds, either. The price of this system is unbeatable for the sound and quality of parts, but where it fell apart for me was the installation. It wasn't hard to measure where to cut the factory mufflers (essentially right where the pipe straightens out behind), but getting the new mufflers in place was ridiculous. I had to beat these things to death with a rubber mallet to get them to hang and fit over the factory piping, which was way more exerting than this installation should have needed. The tips look fantastic, though, once I got them in place and secured. Overall, great purchase.


      Year: 2015 Submodel: EcoBoost

      Helpful (6)

    • 5/5

      Installation Time: Less than 1 Hour

      March 26, 2018

      Mustang just went from a Pony to a Stallion!

      The look of these exhaust is great. The chrome really stands out. In fact, I've never noticed the stock exhaust. When you get it installed, make sure to look at the difference with the new one installed and the stock still on on the other. They sound just exactly how I want it, and is even better when I am accelerating down the road. When you rev your car to a 3 when driving, you will start to feel it. It took about 45 minutes to install, and the guy did it for 60 bucks.Say the look is Great. The sound is exactly what you want and is even better when accelerating down the road. You can hear and feel it in the car, very nicely. Also that it took about 45 minutes to install and a professional did it for 60.00.


      Year: 2017 Submodel: EcoBoost

      Helpful (6)

    • 5/5

      Installation Time: Less than 1 Hour

      March 26, 2018

      Excellent Exhaust

      Fast delivery time. Easy install. Parts for perfectly. Nice deep tone over factory exhaust. No drone driving down highway. Great product.


      Year: 2016 Submodel: EcoBoost

      Helpful (3)

    • 4/5

      February 27, 2018

      Not as loud as they say

      The sounds is not as loud as the description says but it does have a deep tone to it to give it that mustang tone. Mechanic is ordering me a custom H pipe to make it louder.


      Year: 2016 Submodel: EcoBoost

      Helpful (7)

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