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Roush Axle-Back Exhaust w/ Black Tips (11-14 GT; 11-12 GT500)

Market Price $649.74 You Save 21% ($134.75)
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$514.99 (kit)

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  • Item 405963

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Ship to: Ashburn - 20149
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    Features, Video & Details

    • Features Aggressive Sound Tone and Volume
    • No In-Cockpit Boom
    • Provides Higher Air Flow and Less Back Pressure
    • Features Open-Chamber Designed Muffler
    • With 409 Stainless Steel Pipes and Muffler
    • Includes 304 Stainless Steel Exhaust Tips
    • Uses Factory Hangers and Mounting Points
    • Straightforward Installation
    • With 3-Year Limited Warranty
    • Made in the USA
    • Fits All 2011-2014 Ford Mustang GT and 2011-2012 GT500 Models

    Review & Installation Video

    Review & Install Video

    Aggressive Sound, Better Design. This Roush Axle-Back Exhaust with Black Tips, which is exclusively designed for AmericanMuscle, will make your Ford Mustang’s exhaust sound better. It offers an aggressive sound for everyone to hear without any in-cockpit boom or drone. This drone noise is fairly common with other performance exhausts, but since drone is virtually eliminated with this system, you get to enjoy comfortable driving, no matter the cruising speeds.

    Increase Power and Performance. Featuring an open-chambered muffler design and mandrel-bent tubes, this assembly offers unique maximum airflow that increases horsepower and acceleration. Enjoy faster speeds and a better throttle response with this upgrade.

    Superior Quality. This axle-back exhaust not only sounds great, but also looks better than most OEM units out there. The included black round tips are engineered using 304 stainless steel and painted black. This process makes the tips impervious to cracking as well as resistant to heat color change. Meanwhile, the mufflers and inlet pipe are manufactured using 409 stainless steel for guaranteed quality and durability.

    Straightforward Installation. This exhaust assembly is designed to mount to existing factory mounting points for easy and straightforward installation. It comes equipped with all the necessary hardware and instructions. The installation process is intermediate level and can be done within an hour or less.

    With 3-Year Limited Warranty. This Roush exhaust comes with a 3-year limited warranty. It includes coverage for defects in materials and workmanship only. Roush will inspect and determine if the exhaust is eligible for warranty coverage.

    Application. This Roush Axle-Back Exhaust with Black Tips is specifically designed to fit all 2011-2014 Ford Mustang GT and 2011-2012 GT500 models.

    Fitment: 2011 2012 2013 2014 Details

    MPN# 421127-BLK

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Muffler Assembly - Driver Side
    • (1) Muffler assembly - Passenger Side
    • (2) Tips
    • (4) Clamps
    Installation Info
    Will it fit my Mustang?

      Customer Photos (4) Submit Your Photo

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        Questions & Answers (4)

        4 Top Rated Questions

        This states it has a "higher airflow and less back pressure". Will this result in any emission problems? For example, catalytic converter efficiency issues with check engine light being illuminated?

        • This will not cause a check engine light, emissions issues, or catalytic converter efficiency issues.

        Helpful (1)

        Referring to the little "loudness" scale, why does this show louder than the Roush Axleback with the chrome tips?

        • This axle-back exhaust and the Roush with the chrome tips will essentially have the same aggressive exhaust tone.

        Helpful (1)

        Is this axle back offered as a cat back system as well that would give a little hp increase? I own a 2012 Shelby GT500. I love the sound of this axle back but was also looking for a little power increase. What would you recommend? Maybe a new mid pipe? I prefer the H pipe design. Thanks.

        • Unfortunately, we do not carry the cat-back system at the moment. And regarding recommendations on power increase, a mid pipe would definitely help.

        Helpful (0)

        Is it possible to purchase just the black tips separately? Have had this axle-back for several years but that was when the tips were only offered in chrome.

        • I apologize, we, do not carry the tips separate from the axle back.

        Helpful (0)
        Post Your Question

          Customer Reviews (10) Write a Review

          Overall Rating 4.8

          out of 5 stars

          Installation Time:Less than 1 Hour

          • Loudness / Volume 4.444445 4.4
          • Exhaust Note 4.888889 4.9
          • Fit & Finish 4.777778 4.8
          • Bang For Your Buck 4.5 4.5

          • 5/5

            Installation Time: Less than 1 Hour

            July 11, 2019


            Loud, but only when you are getting on it. Excellent sounds. No drone! That is audible atleast.


            Year: 2011 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 04, 2019

            Best sounding axle-back

            I have completely stock exaust except for these axle backs it sounds amazing when you get on it, it pops and sounds good but when you want it quiet you just leave your foot out of the pedal


            Year: 2014 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            April 16, 2019

            Roush axle back black Tips

            Black tips match up beautifully. Sound from this axle back is perfect throughout the band IMO. Recommend highly. Took me about 3 hours to install but I am a novice.


            Year: 2012 Submodel: GT500

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            January 26, 2019

            2014 RTR Mustang

            This is an excellent sounding exhaust the car originally come with RTR mufflers that were already removed when I purchased the car it had borla ataks on it which ended up to be very disappointing the muffler on the passenger side would not fit correctly did not matter how you adjusted it would not stay where it should and actually ended up starting to melt the bumper the sound of them was all right but I don't see where everybody thinks they're the greatest these Roush mufflers fit perfectly the first time with no movement issues and sound much better then the borlas the black tips look excellent against the Grabber blue paint I would highly recommend these mufflers and I am very disappointed with the borlas I'm fairly well mechanically inclined and I adjusted that borla muffler at least three times and it kept going back to the same place and with the money they charge for them there should be an excellent fit was just was not there get the Roush axle backs and you will not be disappointed I think they sound much better very pleased my daughter drives his car in the spring and summer and I'm sure she is going to love it I have an original 2013 RTR that have Flowmaster Outlaws and I prefer both of these exhaust over the borlas but I would say the Roush sound the best


            Year: 2014 Submodel: GT

            Helpful (1)

          • 5/5

            Installation Time: Less than 1 Hour

            January 12, 2019

            There is a reason this exhaust is top rated!

            The Sound is outstanding, with no highway speed drone. I've had Ford Performance GT500 axlebacks. Too quiet. I replaced with SVE cheap axlebacks. The tone was great but the drone almost unbearable at highway speeds. Thats ok if you are a young cat and hate your neighbors. The Roush axlebacks make my Cotote come alive at mid to wide open throttle. The flat black tips match all my black accents and wheels. This is the best choice if you don't want the straight pipe sound. The price is great too.


            Year: 2013 Submodel: GT

            Helpful (4)

          • 4/5

            Installation Time: Less than 1 Hour

            December 18, 2018


            Definitely loud. Tone a little raspier than I would like but ok. Good looking. I like being able to adjust the tips where I want.


            Year: 2011 Submodel: GT500

            Helpful (7)

          • 5/5

            Installation Time: Less than 1 Hour

            November 27, 2018

            Yes, yes you should buy these pipes.

            My car has completely transformed with these pipes. First investment and it was everything that I wanted.


            Year: 2013 Submodel: GT

            Helpful (10)

          • 5/5

            Installation Time: Afternoon

            November 26, 2018

            Roush Axleback black tips

            Amazing amazing product that roush has produced!! beautiful welds and the note coming out is aggressive!!! mellow on the low reps and HOOOLLLLOOOWWWWSSSS at WOT!!! Absolutely love it


            Year: 2014 Submodel: GT

            Helpful (10)

          • 5/5

            Installation Time: Less than 1 Hour

            October 20, 2018

            Easy Great MOD

            Took about an hour, looks great and sounds great. Great snap crackle pop when down shifting.


            Year: 2011 Submodel: GT500

            Helpful (15)

          • 4/5

            Installation Time: Less than 1 Hour

            October 10, 2018


            Great product with the tips could come polished. But you can’t beat the sound


            Year: 2014 Submodel: GT

            Helpful (13)

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