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Roush Axle-Back Exhaust (15-17 GT)

Market Price $599.99 You Save 4% ($25.00)
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$574.99

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  • Item 387039
  • MPN# 421834

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    Features, Videos & Details

    • Aggressive Exhaust Sound
    • Unique Open-Chambered Muffler Design
    • 304 Stainless Steel Construction
    • Full Mandrel-Bent Tubing
    • 4" Round Stainless Steel Tips w/ Chrome Flashing
    • Fits All 2015-2017 GT Mustangs

    Review & Installation Video

    What's up everybody? Justin with americanmuscle.com. Welcome to my quick breakdown of the Roush axle-back exhaust system available for your 2015 Coyote powered GT. As you guys all just heard, the 2015 Roush axle-back definitely lives up to the claim of being one of the more aggressive axle-back systems available for your new GT. The same was true with the '11 to '14 S197 axle-back, and that same super aggressive tone has definitely found its way over to the new S550 kit. That super angry or aggressive tone does come courtesy of Roush's unique open chambered or hollow chambered mufflers as they call them. These things are unique in the fact that they don't use a traditional fiberglass packing material. This allows for that really aggressive tone you guys heard earlier. At the same time, it's going to keep any interior noise or drone to an absolute minimum. In addition, these mufflers are a straight through design, meaning any performance you might see, while minimal typically here with an axle-back, will definitely be a little bit more than what you might see with a traditional chambered muffler. All right, guys, going over the build quality a little bit here. You will notice what little piping there is has all been mandrel-bent two and a half inches in diameter. The entire system has been constructed from quality 304 grade stainless steel. This does include the four inch slash cut tips. These tips are cool because they do feature Roush's unique new chrome flashing process which they say will help reduce any discoloration over the years. By now, guys, you should know that with any 2015 axle-back install there is some cutting required. However, like I tell you in some previous videos, as long as you take your time and follow some basic guidelines you should be good to go. These guidelines do include making sure you have a nice fresh Sawzall blade on hand, make sure you wear your eye protection of course, and last but not least measure twice and cut once. Thankfully, Roush does include some really nice detailed instructions with this kit on where to cut. As long as you take your time, follow the instructions, you can expect to spend about two hours from start to finish getting this thing bolted up. If you guys are looking for one of the most aggressive axle-back systems from one of the most recognizable names in the Mustang world then be sure to check out the Roush axle-back for your Coyote powered GT right here at americanmuscle.com.

    Aggressive Muscle Car Sound. Let your 5.0L Coyote engine howl with a Roush Axle-Back Exhaust. This innovative new Roush exhaust system features a hollow chambered muffler that results in increased air flow and a unique sound, with no in-cabin "boom" normally found with performance exhaust at cruising speeds.

    Quality Roush Construction. Constructed from mandrel bent 304 stainless steel for a durable long life, the Roush axle-back exhaust system features two unique open chambered mufflers with 304 stainless steel 4" tips. The 4" tips are finished with a brand new chrome flashing process that is resistant to discoloration due to exhaust heat.

    Cut & Clamp Installation. The installation of this Roush Axle-Back Exhaust requires cutting and removing the factory muffler assemblies and clamping the new muffler assemblies in place. Clamps and instructions are provided.

    Application. This Roush Performance Axle-Back Exhaust System is designed to fit the all 2015-2017 GT Mustangs, including Fastback and Convertible models, for both great looks and great sound.

    Fitment: 2015 2016 2017 Details

    CA Residents: Warning: California's Proposition 65

    What's in the Box
    • (1) Muffler assembly - Driver Side
    • (1) Muffler assembly - Passenger Side
    • (2) Tips
    • (4) Clamps
    Installation Info
    Tech Specs
    Cat-Back Exhaust Specifications
    Piping Material: 304 Stainless Steel Tip Material : 304 Stainless Steel with Chrome Flashing
    Piping Size: -" Tip Size: 4"
    Muffler Type: Open chambered Fitment: 2015-2017 GT
    Will it fit my Mustang?

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    Questions & Answers (42)

    5 Top Rated Questions

    Bought a 2017 GT Fastback in December (2017) Will installing these or any aftermarket axle-back mufflers affect my five year warranty from Ford?

    • We suggest reaching out to the dealership to see if the Roush Axle-Back Exhaust will affect the warranty.

    Helpful (7)

    I will have this set for my mustang gt 10/12/17,my question is what is in the inside of these mufflers.

    • The mufflers in the Roush Axle-Back Exhaust will contain Roush's proprietary sound deadening materials to enhance the exhaust note of your Mustang.

    Helpful (4)

    I have an 11 month old son, will this be too loud for him in the back seat? I also have a 2006 with a bunch of work done to it and it is too loud for him to ride in so when my wife and I go to shows I need this to be noticeable louder but yet not too loud for my son. Thanks.

    • Hello! Unfortunately loudness is totally subjective to each person, as far as exhaust systems go, an axleback is the more quiet option. However, Roush is one of the louder axleback exhaust systems. I would recommend trying to find someone local with an axleback setup on their mustang, so you can hear it in person to decide.

    Helpful (4)

    Are these Roush axle back exhaust legal in the state of California?

    • We recommend that you check with your local ordinances to determine if their are any decibel limits, but in terms of emissions you'll have no issues. When it comes to the exhaust, if it's not catalytic converters or headers, you won't have to worry about emissions.

    Helpful (2)

    Will this exhaust pair nicely with the Mishimoto H-pipe? I see all of the pairings going with an X pipe, but I really want that low pitched muscle rumble.

    • This Roush Axle-Back Exhaust does not directly attach to the Mishimoto H-Pipe, item 393882. There will still be stock portion of the exhaust that will be re-used that attaches the h-pipe to this axle-back. As long as that portion of exhaust is the same, the axle-back will fit flawlessly with that H-pipe. http://www.americanmuscle.com/mishimoto-hpipe-1517gt.html

    Helpful (2)
    Post Your Question
    10 More Questions
    I have 2 3 years warranty for my Mustang GT. Is there any warranty issue if I would modify the original exhaust system? 1 answer
    will this fit 2015 GT convertible? 1 answer
    Hi I have a 16' GT Convertible. I love my car, but I want some more sound. I am looking for the deep rumbling sound, not the screaming one. Will Roush Axle-Back Exhaust be the right way to go? As of now, I don't want to spend to much money, just want some more sound. Down the road I am also thinking of getting a Roush Supercharger. (727 hp) Will this setup still be okay if I am getting the Supercharger? Does black tips exist for this ? 1 answer
    will this muffle system void the ford warranty 1 answer
    Any drone heard with this Axle-Back and an X-Pipe? 1 answer
    Does anybody have any suggestions of which x pipe to pair with this axle back? 2 answers
    I have a 2015 gt and I purchased a Ford Racing Sport Cat-Back by Borla. If I purchased the Roush axle back would they connect where the Borla mufflers disconnects or would I have to cut or add pipe? 1 answer
    Is this an actual muffler? Or is it like a delete? Just wondering for state inspection? 1 answer
    I have the awe cat back from AM and it has 3 inch pipe. Will these Axel backs still fit? 1 answer
    CAN I PUT THE CORSA QUAD TIP ON THIS AXLE BACK AND FIT into THE GT350 BUMPER? 1 answer

    People Who Bought This Item Also Bought

    Customer Reviews (100+) Write a Review

    Overall Rating 4.9

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$100-$250

    • Loudness / Volume 4.357298 4.4
    • Exhaust Note 4.816993 4.8
    • Fit & Finish 4.860567 4.9
    • Bang For Your Buck 4.736383 4.7



    • 5/5

      Installation Time: Afternoon

      October 14, 2018

      Great Sounding and Well-Built Exhaust Kit

      The Roush Axle-Back Exhaust kit for the 2015-2017 Mustang GT is a very well-built and easy to install exhaust kit. Not only is it constructed well, but it sounds amazing! I've gotten many compliments on the exhaust note this kit has!

      Jacob

      Year: 2017 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      October 11, 2018

      sounds great

      simple install, cut and clamp. Best bang for your buck, Sounds great!!!

      AdrianF

      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      October 10, 2018

      Wake the dead

      If you’re looked for something that will make people take notice, replace the resonator with the Roush X pipe delete and add the Roush axleback exhaust and you’ll have to look pretty hard to find anything louder on the street! GR

      GregR

      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      October 08, 2018

      Great sound for a good price

      I love the sound of the Roush exhaust. Aggressive but not overbearing, at least not for me. Had muffler shop install since I don’t have lift or proper jacks. Looked easy enough and took less than an hour. AM was good to work with and shipping was fast!

      Jegger500

      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      October 02, 2018

      Awesome exhaust

      I had the same exhaust on my 11 GT and sounds amazing, but on my 16 model the resonators have been removed and it’s very aggressive sounding alittle too loud for me but everyone else seems to like it.

      Swst

      Year: 2016 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      October 02, 2018

      Roush Axle- Back Exhaust is the Bomb!!

      Extremely happy with the Roush axle back exhaust they have really awakened my stang! Cold starts are incredible with the deep resonating burble that sounds like a V-8 should and when you get on it the exhaust note is an explosive symphony of sound!! I really love the crackles and occasional pops on downshifting that are incredible; I'm not sure if there's a break in period but I swear the sounds have increased in intensity since installing them and so have the SMG(Smiles per Gallon) !!

      BrianM

      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      September 28, 2018

      More than I expected!

      Pretty much knew this is what I wanted before i got the car. After hearing it for the first time actually on my car it’s so much better in person. I will say don’t pay attention to the loudness meter because there’s no way these shouldn’t be in the red. Definitely wasn’t expecting it to be as loud as it is plus I paired it with the Roush X pipe there’s nothing else to do the exhaust as far as I’m concerned!

      LandonW

      Year: 2015 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      September 27, 2018

      Amazing

      I’m very happy with it . Louder then I expected . Loveing it

      RamiS

      Year: 2016 Submodel: GT

      Helpful (2)

    • 5/5

      September 26, 2018

      Different tone

      I bought this muffler because I wanted a more deeper tone an aggressive sound

      Elton

      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      September 18, 2018

      Loud and brash !

      Read a lot of reviews but eventually pull the trigger on this exhaust and am very happy. It's loud aggressive but amazing and a ton of fun to drive I would recommend it to anyone that loves a loud exhaust. Definitely worth the money.

      Marc

      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      September 17, 2018

      Roush exhaust!

      Great product sounds amazing and sounds better with the roush x-pipe and also very easy ro install

      AngelC

      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      September 14, 2018

      Love Roush

      Installed Roush axle-backs on my 2016 GT. Left the rest of the system stock (resonators and cats). Resulted in the perfect sound (in my opinion). Nice tone, louder but not obnoxious. Sounds like a muscle car.

      TobiasS

      Year: 2016 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      September 11, 2018

      Awesome sound

      I left the resonator in place and just installed the axle back. It still is a great sound and has a nice low rumble. It’s loud enough to show off the V8 and sounds aggressive without being obnoxious. Very pleased with this product. Easy install.

      ChadW

      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Shop Install

      September 06, 2018

      Great

      Sound really good and it’s easy to install I took it to ford cause I don’t want my warranty to get away

      Luis1986

      Year: 2017 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      August 29, 2018

      Roush Axle Back

      The exhaust sounds amazing. Without a doubt, the best exhaust for the s550 5.0. I like my music and have the Shaker system, but after installation of this exhaust, I have turned it down so I can hear the sweet exhaust sound. Better than music.

      StevenB

      Year: 2016 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Less than 1 Hour

      August 27, 2018

      Very nice sound

      The axle back added just enough sound for what I was looking for. Nice kinda throaty sound that makes the stang sound like a muscle car. For the looks,sound and price you can't go wrong. Love it.

      EliasA

      Year: 2015 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      August 13, 2018

      Mustang Motivation

      This product is awesome! It is a great addition to the 5.0! Loud enough at the right time and a nice growl when you're cruising or idling. Being diagnosed as a Type 1 diabetic, my troubles and worries fade away as I start my car. Windows up or windows down, this exhaust paired with the 5.0 gives me hope and strength to enjoy life!!! You will not regret this purchase.

      Johnson

      Year: 2016 Submodel: GT

      Helpful (9)

    • 5/5

      Installation Time: Afternoon

      August 13, 2018

      Great addition

      I originally ordered the Ford Racing by Borla touring axle back for my 2016 GT PP and liked the deep sound when accelerating but I was still missing something. After doing extensive research I decided to try this Roush axle back setup and I'm not dissapointed. More sporty and has a good bark. Cruising speeds produce NO drone at all. I call it, "mild to wild" as it is quiet when you really want it to be but when you slam the gas or press down firmly it WILL produce that sporty sound we're all looking for in our coyote's. Good part is you retain the resonator so you don't lose any torque down low. Excellent finish and fits perfectly. No modifications needed other than the cut and clamp instructions.

      AndrewS

      Year: 2016 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      August 12, 2018

      Muffler

      Product fits good and sounds good easy installation

      Donald

      Year: 2004 Submodel: Mach 1

      Helpful (2)

    • 5/5

      Installation Time: Less than 1 Hour

      August 12, 2018

      Awesome sound

      Super easy to install, sound awesome! Get many smiles per gallon. In sport mode, it raps and pops when downshifting, and I love it!

      GT2008Conv

      Year: 2015 Submodel: GT

      Helpful (2)

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