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Roush Axle-Back Exhaust (11-14 V6)

100+ Reviews
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  • Item #69060
  • MPN# 421145

  • Market Price $489.99
  • You Save 4% ($20.00)
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  • Aggressive Exhaust Sound
  • Unique Open-Chambered Muffler Design
  • 409 Stainless Steel Tubing
  • 304 Stainless Steel Tips w/ Chrome Flashing
  • Fits 2011-2014 V6 Mustangs
Aggressive Muscle Car Sound. Let everyone know your 2011-2014 V6 has arrived with the aggressive sound of this high performance Roush 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 tips. The 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 2011-2013+ V6 Mustangs with the stock V6 rear valance or the Roush Rear Valance.

Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (2) Muffler assemblies
  • (4) Clamps
Installation Info
Tech Specs
Axle-Back Exhaust Specifications
Piping Material: 409 Stainless Steel Tip Material : 304 Stainless Steel with Chrome Flashing
Piping Size: 2 1/2" Tip Size: 4
Muffler Type: Chambered Fitment: 2011-2014+ V6 Mustangs
Will it fit my Mustang?
  • V6 - 11, 12, 13, 14

Most Helpful Reviews

Great product

Installed this system quickly and they are great sounding to me. However, if you or your neighbors have sensitive ears, they may be a touch too loud but I love 'em.

Helpful (3)

Make the right choice!

Oh it's definitely loud, but it's a great loud. I heard that the Roush was raspy, I wouldn't call it raspy so much as unique. You aren't gonna sound ricey but you aren't gonna sound like a V8 either, it ...

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Helpful (1)

Overall Rating 4.7 out of 5 stars
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14 Questions / 12 Answers

Ask a Question

square tips will the square tip version of these fit within the normal rear valence without modification? im torn between these and magnaflow competitions


  • My friend recently purchased the Square tips for his 2013. They do fit within the stock axle back cut outs. But it does look ugly in my opinion. If you do buy the square tips, I would suggest getting the valence.


    Good Answer (3) (0)

Show 4 more answers Question Resolved

Why does the picture here not match the Roush Website for the same part number, 421145? The hangers and finish pictured look different than the Roush website.


  • I'm not sure why Roush has a different picture (I just checked it out as well), But what I can tell you, Is the one you're purchasing looks exactly like the one in the pictures of the AmericanMuscle site. (I purchased these for my Mustang)


    Good Answer (0) (0)

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I have these for a 2012 mustang will they fit a 2014 mustang gt?


  • unfortunately no - these are designed specifically for the V6 not the GT. if u are lookig for the GT set you need to get #421127 set since i believe the pipes are a different size BUT they are the same price on here!


    Good Answer (0) (0)

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which is louder borla S-TYPE roush? will s-type pops and gurgles when shift or decelerate?


  • As a current owner of the Roush exhaust, I have to say that the Roush axle-backs are much louder. The Roush axle-backs have a much raspier exhaust note, while the Borla S-Types have a more deeper sound. Both exhaust systems provide pops and gurgles when you shift, decelerate, and downshift.


    Good Answer (0) (0)

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Im am stuck between the Roush Axle-Backs and the Pypes Pype Bomb Axle-Backs. Im am going to be purchasing a tuner and a cool air intake soon and would love for some input of those as well. Thank you.


  • If your budget allows, you can't go wrong with Roush kit. They are very high quality and fitment is always spot on. The CAI and tune will give you more HP and Torque. The Axle-backs will complement the tune and give your Mustang the sound it should have had when it left the factory. Good Luck!


    Good Answer (1) (0)

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Is the Roush rear valence required for this exhaust or will it fit my stock 2014 V6 Mustang?


  • No, it does not require any new valence. It will work perfectly with your OEM body work.


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Customer Reviews (100+) Write a Review

Overall Rating 4.7

out of 5 stars

Installation Time:Afternoon

Installation Cost:0-$100

  • Loudness / Volume 4.755981 4.8
  • Exhaust Note 4.497608 4.5
  • Fit & Finish 4.794259 4.8
  • Bang For Your Buck 4.583732 4.6

  • 5/5

    Installation Time: Less than 1 Hour

    October 03, 2016

    Deep and Very Loud

    First of all this exhaust is crazy loud. In my opinion this is the deepest and loudest exhaust for a v6. If you have a manual your car while sound mean, a cold start is nice and loud and even a warm start is still decently loud. One thing that some may not like is that from shifting from 1 to 2 to 3 if you reach around 3000 rpms it will make a loud pop like a gunshot which i think is awesome but some may disagree. If you don't know what exhaust to get, get this one. My dad has a 09 Bullett and his sound is amazing. and this exhaust is close to the same. Same level of loudness but a little more high pitched. install was fairly easy the hardest thing was getting the stock exhaust off but after that it was a breeze.


    Year: 2014 Submodel: V6

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    September 12, 2016


    Sounds is nice. Deep rumble at idle and scream when you step on the peddle. Recommended!!


    Year: 2014 Submodel: V6

    Helpful (1) (0)

  • 5/5

    August 19, 2016

    Team Roush

    Sounds deep and breaks lots of necks!!!! This exhaust is the best one out there my opinion.


    Year: 2014 Submodel: V6

    Helpful (1) (0)

  • 5/5

    August 08, 2016

    Roush axle back 11 v6

    Installed these just a few weeks ago and still to this day don't regret the decision.. Great sound for a sixxer... Installation wasn't hard at all. Maybe 45 mins... I love the compliments I've been getting and the heads that are turning when I ride by!


    Year: 2011 Submodel: V6

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    June 12, 2016

    Make the right choice!

    Oh it's definitely loud, but it's a great loud. I heard that the Roush was raspy, I wouldn't call it raspy so much as unique. You aren't gonna sound ricey but you aren't gonna sound like a V8 either, it strikes a perfect balance between the two and sounds incredible. It seems to changes tones throughout the rpms and adds an interesting mix of personality for your Stang. You won't go wrong with the Roush, and it's easy to install!


    Year: 2013 Submodel: V6

    Helpful (1) (0)

  • 5/5

    May 29, 2016


    Wow, these are loud... And I love them!!! Videos do not do them justice as far as how booming loud they truly are. Nice exhaust note, hearing them makes me smile everyday.


    Year: 2011 Submodel: V6

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    August 15, 2013

    Sweet Sound!

    These look and sound great! Gives my car the rumble I was looking for. They're not too loud, but give a perfect sound. Installation was easy and took 30 minutes. Putting the car on ramps definitely makes installation easier. It helps to have a 2nd person to hold the old mufflers while removing them. Would definitely recommend the Roush Axleback!!


    Year: 2014 Submodel: V6 Kansas, USA

    Helpful (2) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    June 07, 2013


    I had to admit, I couldn't wait to find that right exhausts for my '13 V6. I had gone through so many different sound clips and I finally decided to go with the Roush since it had so many great reviews. First off, if you're anything like me (searching endlessly for sound clips online) there is no video available that truly captures the exhaust note of this exhaust. In person it has truly lived up to my standards... in fact it has surpassed them. These are LOUD. I like that I can punch it to 3k+ RPM and hear a loud raspy exhaust coming from my car. When idling it just sounds great. Between 1k-2.3k RPM its just a little noticeable and that is just how i like them. The install is so easy a cave man can do it. It took about 30-45 minutes to install them. In my opinion getting the OEM parts off where the hardest part. Just use a jack and some stands and it should be a pretty smooth install. I didn't even really have to use the instructions that came with it because it was just that easy, I highly recommend this product to anyone. American Muscle has done a fine job sending these to me as I had received it just 3 days after ordering them!


    Year: 2013 Submodel: V6 Miami, FL, USA

    Helpful (2) (0)

  • 3/5

    Installation Time: Less than 1 Hour

    April 30, 2013

    Looks great, sounds decent, fit bad

    Installation took about 30 minutes and was very simple. The tips look fantastic but I am not very happy with the fit. The exhaust on the driver's side of the car is sticking out about 1/2"-1" more than the passenger side. No matter what I do I can't get it to adjust and be even with the passenger side. They are very loud, but the tone is decent. Drone isn't too bad with the windows up, AC cranked, and radio on. The tone actually changed quite a bit and got a lot more popping when I put the CAI in. Overall, I like the exhaust, but not happy with how it fit. It is pretty obvious that one side is sitting out more than the other. I found a guy on youtube who reduced the raspiness of the exhaust by adding some Thrush glasspacks inline as resonators. It made the exhaust sound 100 times better and I think I will be doing that next.


    Year: 2013 Submodel: V6 Mississippi, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    February 15, 2013

    Best Value!

    I had this installed at a local shop. It took them less than an hour to put it on and they only charged me $100 (well worth the money). This was my first real mod to my 2013 and it's the best investment I've ever made! Sounds AMAZING!


    Year: 2013 Submodel: V6 Charlotte, NC

    Helpful (2) (0)

  • 4/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    September 16, 2012

    2013 V6 Roush Axle Back

    I did alot of research online reading reviews and listening to sound clips. Like most reviews say, the sound clips really do this exhaust no justice. Yes its loud. Not annoying though. I would Definetly reccomend this product if you don't want to spend the extra $200-300 for the borla. It's got a great note and I love the gurgle and pop in between shifts. There is very little drone inside the cabin and it's only in 6th gear. Still able to talk on my Bluetooth no problem. Shipping was fast and easy. I had it installed at Miidas for $100. The guys at the shop loved it and said it sounded very similar to a 2012 Boss that was in there. I didn't notice a change in gas milage but this exhaust is much lighter than the stock. The chrome tips are just beautiful. If your considering buying Roush, just go for it. You will be happy


    Year: 2013 Submodel: V6 Temecula, CA, USA

    Helpful (4) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    December 23, 2011

    LOVE IT!

    If you have a V6 and you want a nice crisp note, sweet rumble, with snap, crackle and pop with every shift. get this exhaust! i drove the 2011 Roush stage 2 and this is the same exhaust with the same kind of sound. i love it.


    Year: 2012 Submodel: V6 Fishkill, NY

    Helpful (2) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    October 29, 2011

    Great product

    Installed this system quickly and they are great sounding to me. However, if you or your neighbors have sensitive ears, they may be a touch too loud but I love 'em.


    Year: 2012 Submodel: V6 San Marcos, Ca.

    Helpful (3) (0)

  • 5/5

    March 26, 2011

    2011 v6 ROush axle back

    To start.... wow. The exhaust system was rather simple to put on. 1 hour from removal of old mufflers and install of new ones. They have a great finish.. The worst part was removing the old stock ones. This exhaust has such an amazing tone in prson. NO audio on the internet truly displays the sound quality.... It is loud... but also throaty... and down right nasty at full throttle.... I LOVE IT... It is all smiles from ear to ear. If you are thinking about it... stop... JUST get it.


    Year: 2011 Submodel: V6

    Helpful (26) (0)

  • 5/5

    January 09, 2011

    worth the money

    Bought this for my 2011 V6 premium mustang, it has a nice deep sound. Everyone who has heard it loves it! It was easy to install took about an hour.


    Year: 2011 Submodel: V6

    Helpful (17) (0)

  • 5/5

    March 13, 2011

    Sound Amazing

    Sound is amazing. LOUD and DEEP. When cruising there is little noise in the cabin. but if u try to accelerate between 1500-2000 RPM in higher gear it gets drone inside.2k+ RPM sound is amazing. if u change gear between 3000 to 4000 then u get extremely LOUD POPPING which is the BEST part about this exhaust. i really like them and definitely recommend them.

    Jatinder Rooprai

    Year: 2011 Submodel: V6

    Helpful (15) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    May 26, 2012

    V6 Roush exhaust

    This exhaust is really a nice sounding exhaust! It makes my v6 sound like a v8! When you're on the highway, or cruising around 25-30 mph, the exhaust has a really nice rumble that isnt too loud, which is a good thing for me. You can actually hear the person next to you talking. But whenever you punch it, it definately SCREAMS! It just SCREAMS power! This exhaust is definitely worth every penny and the time you spend! The only bad thing about this exhaust, is that if you live in a small town like me, the cops will be all over you if you punch it. Because the exhaust screams soo loud that you can hear it across a 2000 population town. But it just makes it fun. ;)


    Year: 2011 Submodel: V6 Kansas

    Helpful (2) (1)

  • 5/5

    July 08, 2011

    Perfect Sound

    Bought this for my 2012 V6 mustang. Prior to the exhaust I purchased the C&L cold air intake. It sounded ok with the stock exhaust but still wasn't the sound I wanted. I looked around and decided to go with the roush exhaust. Glad I did. The sound is amazing. I had them installed at a local shop. As soon as the car started I knew I made the right choice. I put my car next to my dad's 03 Mach 1 (flowmaster 40 series catback system)to compare the sound and the roush kills it. Would highly recommend them to anyone looking for a mean sounding exhaust. (Not for the faint of heart).


    Year: 2012 Submodel: V6

    Helpful (4) (2)

  • 2/5

    Installation Time: Less than 1 Hour

    December 25, 2012

    Highly Disappointed with These Axle Backs

    I did vast research when looking for the right exhaust for my 2013 V6... I decided to go with Roush, as YouTube videos portrayed them with the best sound (so I thought). Plus, it's Roush, so I thought I couldn't go wrong. Install was simple, and took less than an hour. Hardest part was getting the stock mufflers off. At start up and idle, the thing sounds like a beast. It has a deep rumble, and sounds great. Anything higher than 2500RPMs, and I am highly disappointed. The first thing my dad said when I pulled up, was "Sounds like my Sentra (Spec-V, in which he has riced out)..." Then I went to my boyfriend's, and the first thing he said was "Sounds like a 4-banger with a coffee can". They are both EXACTLY right! It has the most terrible, high pitched, ricey tone. Trust me, I know it's a V6, but there is absolutely no way that 305hp should sound like this. Long story short, I'll be taking these off as soon as I can. The high pitched, obnoxious sound is too much. I'm all for LOUD, but not the gross tone these axle backs put out.


    Year: 2013 Submodel: V6 Riverside, CA, USA

    Helpful (9) (0)

    • Response from AmericanMuscle

      Lisa , Customer Care

  • 2/5

    Installation Time: Less than 1 Hour

    September 10, 2011

    Poor quality

    I bought these axel-backs a few months ago, and I wrote a review titled "Pleasently Suprisded". However, now a few months later when I was inspecting the mufflers, I noticed that the left muffer has split along the soddering. This spilt takes up about half of side of the muffler and, has been leaking the black exaust grit on the finnish of it. I think it was due to heat, and poor construction. I know it is cheaper construction because they are MADE IN CHINA. Its more cost effective for Roush, but not true quality anymore. They also are rusting in a localized area of the other muffler and has ruined the chrome finish, and eaten away at it. Im going to try to get my money back because im not dealing with it again, and im going to get the Borla ATAKs. They are made in America, are more expensive due to better construction, and have a million mile warrenty. If you are considering the Rosuh axel-backs, I highly advise not to, and might as well spend the extra couple hundred to not deal with the big headache that I have to deal with now to get my money back.


    Year: 2011 Submodel: V6

    Helpful (20) (7)

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