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Axle-Back Exhaust (15-17 GT)

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

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  • Item 398967

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Ship to: Ashburn - 20149
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    Features, Video & Details

    • Loud Exhaust Note
    • Impassive Performance Gains
    • Free Flowing Muffler Design
    • Race Mufflers
    • High Quality Chrome Finish
    • Dual-Walled Angle Cut and Mirror Polished 4" Tips
    • T304 Stainless Steel
    • Weighs 40 Pounds
    • Direct Bolt-On Installation
    • Limited Lifetime Warranty
    • Fits 2015 to 2017 Ford Mustang GT Models

    Review & Installation Video

    Review & Install Video

    Loud Exhaust Note. NXT Step Performance Axle-Back Exhaust is designed to transform your GT’s quiet exhaust note into a roaring machined sound. The inclusion of race mufflers accentuates the exhaust note besides making the kit suitable for both racing applications and daily driving.

    Performance Boost and Fuel Efficiency. Give your Mustang GT the much-needed performance enhancement with this axle-back exhaust kit. Its free-flowing muffler design improves your GT’s exhaust flow thus boosting its rear wheel torque and horsepower. It similarly helps to lower exhaust temperature thus improving your car’s engine power and fuel efficiency.

    Built for Endurance. NXT Step Performance Axle-Back Exhaust is made from high-grade T304 stainless steel which is strong, and corrosion-resistant. It features a pair of straight pipes that have dual-walled angle cut and mirror polished 4" tips that help your Mustang to have a muscle car appearance. The dual walls enable the pipes to withstand high exhaust temperatures. The high-quality chrome finish not only accentuates the kit’s appearance but also protects it from scratches and corrosion.

    Direct Bolt-On Installation. NXT Step Performance Axle-Back Exhaust is engineered to be a direct replacement to your GT’s factory exhaust system. It uses your Mustang’s factory clamps and therefore, directly bolts to its factory piping without requiring you to make any modifications.

    Warranty Information. All NXT Step Performance exhaust kits are backed by a limited lifetime warranty against manufacturing defects. Only original purchasers are eligible for warranties.

    Application. NXT Step Performance Axle-Back Exhaust is designed to fit all 2015 to 2017 Ford Mustang GT Models.

    Fitment: 2015 2016 2017 Details

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (2) Mufflers
    • (2) Muffler Tips
    • Exhaust Clamps
    • Mounting Hardware
    Installation Info
    Will it fit my Mustang?

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    Questions & Answers (5)

    5 Top Rated Questions

    I have seen several people in the feedback section mention exhaust drone but both people also seem to be running without a resonator. If you still have a resonator, does this exhaust drone?

    What kind of gains I’m HP and torque would I expect from this install on a 15-17 Mustang GT?

    • Generally axle-back exhausts will not provide any horsepower or torque gains. They usually only increase the volume of the exhaust. However, per Nxt Step, you may see performance gains up to 5 HP.

    Helpful (0)

    will it fit a convertible

    • Yes, the Nxt Step axle-back exhaust will fit a 15-17 GT convertible model.

    Helpful (0)

    Will this product fit for a 2017 v6 mustang?

    • The Nxt Step Performance Axle-Back exhaust is designed to fit the 2015-2017 GT model Mustangs and will not fit properly on your 2017 V6 Mustang. We do have the Nxt Step Performance axle back exhaust for the V6 as well here:

    Helpful (0)

    Hello, Do you have a sample video for this muffler? this is not a muffler delete exhaust right?

    • We currently do not have a video for this Nxt Step Performance Axle-Back Exhaust, we apologize. This exhaust does have mufflers.

    Helpful (0)
    Post Your Question

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    Customer Reviews (7) Write a Review

    Overall Rating 4

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:0-$100

    • Loudness / Volume 4.333333 4.3
    • Exhaust Note 4.333333 4.3
    • Fit & Finish 3.666667 3.7
    • Bang For Your Buck 4.285714 4.3

    • 5/5

      Installation Time: Less than 1 Hour

      January 13, 2019

      Love it

      Very easy to install, and has the sound that should be put on at the manufacturer.


      Year: 2015 Submodel: GT

      Helpful (2)

    • 2/5

      Installation Time: Less than 1 Hour

      August 21, 2018

      Do not recommend

      Mufflers sound really good at idle but drones extremely bad going down the interstate. May be better with a resonator, definitely wouldn't get with an x pipe like on my car. Also couldn't return even though they were only installed for less than a day.


      Year: 2016 Submodel: GT

      Helpful (3)

    • 4/5

      Installation Time: Afternoon

      April 19, 2018

      Nxt step exhaust

      Amazing sound!!!! I have a mishimoto h-pipe, coupled with the nxt step exhaust it is the lowest rumble i have heard on a coyote 5.0 mustang. It is loud but not corsa or borla high pitch or raspy. Con There is a good amount of drone in 6th gear but it goes away at freeway speed 70-80 ish, but lower than that in 6th the drone is loud. Does not slip straight on install required some shoving/hammering and a bit of gringing. Though it was rather quick to do. Only 4 stars because the drone and install. Would heavely recomend for those wanting a deeper sound.


      Year: 2017 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Less than 1 Hour

      January 18, 2018

      A lot of bang for your buck!

      These axle-backs are better than I expected for the price. They’re just perfect in sound, not obnoxiously loud but not quiet either. The construction of these are solid and as described when I ordered them.


      Year: 2015 Submodel: GT

      Helpful (10)

    • 3/5

      Installation Time: Afternoon

      January 09, 2018

      Sounds great fit is an issue

      So the sound is great it's loud, my setup makes it really really loud. The fit is perfect on the passengers side, but for the drivers side it's horrible I'm gonna have to the it in and have a shop completely redo that side. Even though the install is very straight forward there were no installation instructions so if you need those then don't get this!


      Year: 2015 Submodel: GT

      Helpful (7)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      December 23, 2017


      Had these installed by a muffler shop and it was a good thing that I did. They had a hard time getting the mufflers onto the exhaust pipes after they were cut, especially on the passenger side. After trying to expand the pipe they finally got it on by heating up the exhaust pipe. After getting them on, the fit was good. They look real nice and the exhaust tone was real throaty. To me this was the best bang tor the buck.


      Year: 2017 Submodel: GT

      Helpful (11)

    • 5/5

      Installation Time: Less than 1 Hour

      December 14, 2017

      Good products Good prices

      Bought several parts over the years and always good Qaulity and good prices ,recommend American Muscle to anybody needing mustang parts.


      Year: 2017 Submodel: GT

      Helpful (9)

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