Win a Full Raxiom Overhaul Ends 2/28   Enter To Win
1-888-332-7930 M-F 9-9 EST, Sat 9-5:30 EST

Free Shipping on Everything. Seriously. Details

Roush Axle-Back Exhaust (11-14 GT, 11-12 GT500)

100+ Reviews
Our Price


  • Item #69059
  • MPN #421127
  • Market Price $535.79
  • You Save 12% ($65.80)
In Stock Ships same business day.
Free Shipping on Everything
Product Videos Customer Photos
  • Aggressive exhaust sound
  • Unique open-chambered muffler design
  • 409 stainless steel tubing
  • 304 stainless steel tips w/ chrome flashing
  • Fits 2011-2014 GT & 11-12 GT500 Mustangs
Aggressive Muscle Car Sound. Let your engine howl with a Roush Axle-Back Exhaust. This innovative new Roush exhaust system features a hollow chamber 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 409 stainless steel for a durable long life, the Roush axle-back exhaust system features two unique chambered mufflers with 304 stainless steel 4" tips. The 4" tips are finished with a new chrome flashing process that is resistant to discoloration due to exhaust heat.

Application. This Roush Performance Axle-Back exhaust system will fit the 2011-2014 GT & 2011-2012 GT500 Mustangs with either the stock factory GT rear valance or the Roush rear valance.

Mustang Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (2) Muffler assemblies
  • (2) Tips
  • (4) Clamps
Installation Info
Tech Specs
Axleback Exhaust Specifications
Piping Material: 409 Stainless Steel Tip Material : 304 Stainless Steel with Chrome Flashing
Piping Size: 2.75" Tip Size: 4"
Muffler Type: Chambered Fitment: 2011-2014 GT & GT500 Mustangs
  • Boss 302 - 12, 13
  • GT - 11, 12, 13, 14
  • GT500 - 11, 12

Most Helpful Reviews View All

Overall Rating 4.9/5 Write a Review
50 year old man here, smiling like a teen again!

After reading all of the reviews here, I have no regrets with this purchase. They sound awesome! When cruising at 70 or so in my 2012 GT Premium you can barely hear them, but open the throttle and the

Read More
Helpful (26) (3)

Oh yeah...!

These were a delightful surprise. In this world, it seems increasingly true that you get what you pay for, and this often a lt for a little. I listened to every audio file of every exhaust out there, and

Read More
Helpful (30) (7)


Customer Photos (80) View All

You Might Also Like

Q & A (16 Questions, 12 Answers) Ask a Question

Is it necessary to purchase the valance with this roush exhaust I am interested in roush exhaust; however, I prefer without valance. Is that possible?

Ruby Year: 2013 Model: GT

Question Resolved
Good Question (2) (2)
  • Yes, I have the Roush exhaust with my stock valance. Fits great!

    Helpful (1) (0)

    Best Answer

    BattleKat Year: 2011 Model: GT

Show 4 more answers

What exhaust to buy? I'm looking for an axle-back exhaust that is one notch above stock in terms of sound. I don't mind WOT loud, but at normal acceleration, idle, and cruise I want just a little more growl. I still want to listen to music and carry on a conversation typically. What exhaust do you think fits the bill the best?

mbrewer566 Year: 2013 Model: GT

Question Resolved
Good Question (35) (0)
  • This would be the best exhaust for your needs. I installed it on my vehicle and the sound is perfect! It is not loud and obnoxious when you are just driving normal, but when you get on it you can certainly tell a difference. This is the best bang for your buck, and has the best sound!

    Helpful (12) (5)

    Best Answer

    striker79 Year: 2011 Model: GT

    Top 100 Contributor

Show 4 more answers

2013 mustang 6cyl exhaust I would like to know what exhaust will work with my 2013 mustang 6 cyl to hear a little rumble. thanks

bree Year: 2013 Model: V6

Question Resolved
Good Question (0) (0)
  • Unfortunately, this will not work on your V6. However, Roush does make one specific for your V6, please check out the link below!

    Helpful (0) (0)

    LisaS Year: 1992 Model: GT

Show 1 more answer

Reviews (100+) Write a Review

  • 5 Stars .94 95%
  • 4 Stars .04 4%
  • 3 Stars .01 1%
  • 2 Stars .00 0%
  • 1 Stars .00 0%

out of 5 stars

100+ Customers Recommend this Product

Installation Time:Afternoon

Installation Cost:0-$100

  • Loudness / Volume: 4.79717 4.8/5
  • Exhaust Note: 4.87234 4.9/5
  • Fit & Finish: 4.888889 4.9/5
  • Bang For Your Buck: 4.815166 4.8/5
Filter By Sort By
  • 5/5

    50 year old man here, smiling like a teen again!

    September 21, 2011

    After reading all of the reviews here, I have no regrets with this purchase. They sound awesome! When cruising at 70 or so in my 2012 GT Premium you can barely hear them, but open the throttle and the holy sh*! factor kicks in. You will not be disappointed. This Mustang sounds like it should. I revved the engine in a parking garage for my coworker to hear, and we were giggling like a couple kids that just blew up a stick of dynamite. They are loud but did not set off car alarms nearby.



    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3

    Helpful (26) (3)

  • 5/5

    Oh yeah...!

    November 29, 2010

    These were a delightful surprise. In this world, it seems increasingly true that you get what you pay for, and this often a lt for a little. I listened to every audio file of every exhaust out there, and liked the Roush the best. The Roush preserves the classic Ford small-block rumble, yet when the cams come on at about 4,000 RPM, it sounds absolutely ferocious. Nothing tops the sound of a throughbred V-8 when its angry, and for me that means the Roush axleback. Highly recommended


    Driving Style: Race

    Helpful (30) (7)

  • 5/5

    A Guaranteed Smile Maker

    May 25, 2012

    As a recently retired 62 year old geezer, I decided to put the Roush exhaust on my 2011 GT500. Install was a breeze and then it was the time to fire the baby up. When I first heard the notes of this exhaust, a smile appeared on my face and extended from ear to ear. And then I drove the car with my windows down and listened to the Roush Symphony Orchestra. The notes can be civilized and subdued, but also aggressive and throaty when called upon. The sound is not an ear piercing rasp, but rather a nice rumble of power. Excellent!


    Year: 2011 Model: GT500 Driving Style: Daily Driver 'Stangs I have owned: 2 Smyrna, New York

    Helpful (9) (0)

  • 5/5

    Worth Every Penny

    March 19, 2012

    One of the first things I wanted to do for my new 2012 Mustang was to upgrade the exhaust. I spent countless hours watching video after video of all the exhausts available. From all the research, I decided that I wanted the Flowmaster hushpower or the american thunder for the cheaper price. I then read more about aftermarket parts and new mustangs and discovered that buying these parts could void my warranty. I called multiple ford dealerships to see what they said. They recommended I buy a ford racing exhaust. I considered the GT500 exhaust, but from the clips I listened to, the sound was not much louder but only deeper. The other Ford Racing axle backs were also too expensive. I then asked about the Roush, which was slightly more expensive then what I had been looking at with the GT500 and Flowmaster, and Ford said Roush and Borla products shouldn't effect the warranty like other brands could. I thought it sounded good on youtube and american muscle so I purchased the axle backs. It shipped on time with no damage. I then had it professionally installed so the dealership could not give me grief for doing it myself. I read reviews saying videos and sound clips do not do this product justice and everyone is right! From a cold start, it has a deep rumble without being obnoxious and too loud and after warming up it sounds like the stock. However step on the gas and it roars to life! This is what a mustang should sound like. It is much louder and aggressive like a muscle car should sound. At first I was worried that they would not be as loud as I was looking for but I definitely was not disappointed. My Mustang turns heads everywhere I go now. If you are trying to decide on an exhaust but you can't make up your mind, just go with the Roush axle backs. It is a high quality part that definitely is worth the money. I promise you won't be disappointed.


    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 San Antonio, TX

    Helpful (9) (0)

  • 5/5


    October 31, 2011

    This Axle-back exhaust sounds absoutly fantastic. They were not complex to install at all. Once the car was up on ramps, I was able to crawl under with plenty of clearance to remove the stock exhaust and install these. Since this was the first mechanical upgrade I have installed myself, I took my time. It took me 2 hours total, to remove the stock exhaust and install the Roush Axle-Back exhaust. Idle: no louder than stock (outside or in cabin) Normal Acceleration: louder than stock but not obnoxiously loud. Quite amazing actualy WOT: A roar that brings a smile to my face! If you are looking for an axle-back system that increases air flow, upgrades the overall sound, looks fantastic, and is easy to install on your own, look no further!

    Top 100 Contributor


    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Virginia

    Helpful (11) (1)

  • 5/5

    Great sound, easy install, high quality

    July 29, 2011

    I've had these on my car for almost 4,000 miles now and can honestly say they get even better with time. When I first put them on there was a little popping here and there and tone was a little high pitched but after awhile the popping is minimal and they have a much deeper tone. As far as quality well IMO they look just as good as the day I installed them. Speaking of install....that was a snap easily done in under an hour with a set of ramps in driveway. Sounds awesome especially at high rpm's with little to no drone at 75 mph.

    Jeremy C

    Year: 2011 Model: GT Driving Style: Daily Driver

    Helpful (11) (1)

  • 3/5

    Awesome sound, but quality lacking

    June 23, 2012

    Have had this exhaust installed on my mustang for a year now. The sound is incredible, best i've heard on an aftermarket exhaust. Sort of subdued at idle, but with a bit of the lumpy, motorboat sound coming through. Through 3000 rpm, nice, throaty sound. At around 3000, car screams like a banshee, without being too raspy. Got this system to replace the pypebombs - they had a terrible boom at highway speeds. These don't. That said, I'm not at all impressed with the quality. After 13 months of garage storage and 11000 miles of use (never on salty roads) the sound at light throttle changed, picking up a rapid metallic tapping. Put the car on the lift today to find out that both mufflers are falling apart. The cylindrical portion of the muffler is separating from the front end cap, at the weld. Both mufflers have soot deposits at the cracks, indicating exhaust leakage through them. Additionally, the mufflers and associated piping both have more rust than my 4 year old catback system on my daily driver/winter beater. Will update review once I hear back from Roush on their 3 year warranty and if this is covered - I have a feeling that I won't be the only one that has to use it.


    Year: 2011 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 baltimore, md

    Helpful (7) (0)

    • Response from AmericanMuscle

      This is definitely the first time I've heard about any quality issues with this axle-back. I'm sorry to hear about your experience, but I'm confident that Roush should be able to assist you without any problem! But if for any reason they can't help you out, please give us a call; we'd be glad to remedy the situation!

      Lisa , Customer Care

  • 5/5

    Sound of the Beast

    April 09, 2012

    Outstanding exhaust note. Sounds like how a V8 should, rumble not raspy. No drone present even at Autobahn speeds. Make no mistake though, these Axel-backs are loud, especially when you turn the engine over on a cold morning. Was considering SLP's as well but figured for daily driving it might be a tad bit too much. Install was a breeze. As for removing the stock driver's side muffler, just got ahead and unbolt the muffler from the hanger first, then remove the whole unit. Don't waste time trying to pry off the flange. You will notice a considerable weight difference with these, much lighter than stock. Couldn't be happier.


    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Germany

    Helpful (7) (0)

  • 5/5

    Excellent choice

    September 20, 2011

    i did a lot of research before selecting an axleback. I was looking for something with a deep aggressive tone that would scream when opened up. I also wanted something that wouldn't drone or be loud at highway speeds. The roush system delivered for me. It was also a big weight savor over the stock exhaust. Install was sympol. It only took 27 minutes for everything. Shipping was quick and American muscle had the best price on the roush system, I only paid 342 during one of there sales.



    Year: 2012 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 1 Raeford nc

    Helpful (7) (0)

  • 5/5

    Great sound!

    September 11, 2011

    After adding these axlebacks to my car I couldn't believe the incredible tones they produced: cold start sounds great, down shifting gurgling, and when you call on it, wow. I would disagree with those who say these are to loud for a conservative neighborhood. For one, the exhaust is minimal at idle. Secondly, at low RPMS not loud at all. Yes, when you cold start you might get some notice, but that's about it. Drive in a higher gear with low RPM, and you won't cause a stir. Maybe some people are driving too fast in the neighborhood =D Finally I would say that people over simplify the installation. The directions that come with the kit are ok, but the pictures are completely unreadable. Regardless, the directions leave out a step required for removing the exhaust on the drivers side. Still all in all only took me a couple of hours with jack stands.


    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 North Carolina

    Helpful (6) (0)

More Products You Might Like

Related Categories