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Roush Axle-Back Exhaust (15-19 EcoBoost w/o Active Exhaust)

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Market Price $673.99 You Save 12% ($78.00)
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  • Item 387040A

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    Features, Video & Details

    • Aggressive Raspy Exhaust Note
    • Unique Open-Chambered Muffler Design
    • 304 Stainless Steel Construction
    • Full Mandrel-Bent Tubing
    • 4" Round Stainless Steel Tips w/ Chrome Flashing
    • Not Compatible with Active Exhaust
    • Fits 2015-2019 EcoBoost Mustangs

    Review & Installation Video

    Review & Install Video

    What's up, guys? Stephanie with AmericanMuscle.com, and this is my review of the Roush axle-back exhaust fitting 2015 and up EcoBoost Mustangs. The Roush axle-back is going to be a good option for the S550 EcoBoost owners out there that are looking for a more aggressive, raspy exhaust note from an axle-back system. This isn't necessarily an over the top or too loud of a system, but it's definitely not a quiet or toned down system, either. This is a perfect option for guys that are looking for something loud and something that's going to open up some exhaust flow and give a meaner sound than the factory exhaust. The axle-back is designed to open up sound and exhaust flow and ultimately power. This axle-back does have Roush's hollow open chambered mufflers that are straight through mufflers, and it's on the louder side. This is a full stainless steel axle-back and it's also mandrel bent. You're looking at 4 inch polished stainless steel tips for out back as well that are chrome flashed. The stainless steel is always a great option for cars that see all different types of road conditions because it offers great corrosion resistance. From the EcoBoost, you can hear that it idled. The axle-back is deeper than the factory exhaust and it's also louder. As the RPMs climb the axle-back loses some of its deepness and the axle-back gets louder. There's a lot of raspiness and pop to it, but the axle-back's made for that. It increases in volume. It doesn't really get quiet like some other axle-backs do which is what makes it perfect for those that are not looking for a tame exhaust. Speaking of things like volume and raspiness, I will admit that this axle-back may have a little bit of sound distortion to it, especially in the higher RPMs. That is something that's normal even with a factory exhaust and high RPMs. Some people love a raspy note and others try to avoid it. This system has a lot of that. If you're not looking for those qualities then there are some other better options for you on the site. Like most aftermarket axle-backs, this one's going to open up some of that nice turbo noise in the EcoBoost. It has better flow, so the turbo noise is very noticeable with this axle-back. You can hear the turbos full and you get a lot of the blow up noise as well. With all this being said, you have to keep in mind that the EcoBoost is a four cylinder turbo car. It's not going to sound like a V8. It's going to have a different sound than the V6 even. You can't really make it sound identical to a V8. There are, however, other exhaust options that can give you a smoother sound that resembles more of a V8. Don't be discouraged if you're an EcoBoost owner and you aren't into this axle-back. Overall, this is a deep sounding system that has a lot of raspiness and popping to it. I wouldn't call it quiet or tame. This is just an axle-back, so keep in mind that it can get even louder with a midpipe and headers. With that being said, I'm going to give it a solid three or four out of five on the loudness scale. At the end of the day, though, no matter if you love this sound or hate it, it really all depends on what you're looking for and what you like. Luckily, there are quite a few options that are out there. When we start to look at price, we see that this axle-back is going to be on the less expensive side of things. It costs right about $550. Some of the more expensive competition is hitting the $800 or $1000 or even $1200 price point. The budget friendliest are coming in halfway through the $300 mark. You're going to be looking at the typical cut and clamp design with the install with this axle-back like all other axle-backs. I'm going to call this a two out of three wrenches on the scale just like I do with all other axle-backs, but just because of the cutting that's involved. It's nothing difficult. I would just recommend some eye protection and a fresh blade to make the cutting easier. Overall, you're looking at about two hours to get this all done. A lift would certainly make things easier for you here, but the job can be done on stands as well if you don't have access to a lift. Cutting the factory axle-back isn't hard. I would just be sure to measure twice and plan and mark where you'll be cutting so you don't make a mistake. The new axle-back will come with four new clamps for you, two for the tips and two for the axle-back itself so you don't have to worry about that. When you go to install your new setup, it would probably be easiest to leave everything loose until you have it all lined up and then tighten it down. Overall, the Roush axle-back is a great option for those looking for a louder and raspy sounding system. It's an open chambered muffler design. It's made from 304 stainless steel. It has 4 inch chrome flashed stainless steel tips. You can check this axle-back out some more online for yourself. For all things Mustang, keep it right here at AmericanMuscle.com.

    Aggressive Raspy Sound. Let everyone know your EcoBoost Mustang has arrived with the aggressive raspy sound of this high performance Roush exhaust. This innovative new Roush exhaust system features a hollow open 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 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 new chrome flashing process that is resistant to discoloration due to exhaust heat.

    Cut & Clamp Installation. The installation of this Axle-Back Exhaust requires cutting and removing the stock 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 2015-2019 EcoBoost Mustangs without the Active Valve Exhaust.

    Fitment: 2015 2016 2017 2018 2019 Details

    MPN# 421837

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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

      Customer Photos (9) Submit Your Photo

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        Questions & Answers (27)

        5 Top Rated Questions

        Can the stock exhaust go back on after having this on?

        • Since this exhaust is a clamp on, you will be able to re-install the stock exhaust at a later point in time.

        Helpful (11)

        How bad is the drone

        • The Roush Axle-Back Exhaust will produce a small amount of drone, however this will be minimal.

        Helpful (7)

        Will the Roush Axle-Back fit the V6 convertible? The convertible has extra bracing.

        • The Roush Axle-Back Exhaust will fit perfectly fine on a V6 convertible.

        Helpful (7)

        Has anyone installed these themselves? Or did you take them to a garage?

        • A large portion of our customers choose to complete builds themselves and we do have an install guide that will cover the process for you here: https://www.americanmuscle.com/roush-axleback-2015v6eco-cust-install.html You can always have these taken into a shop to perform the install as well if you do not have the time, experience, tools, or space to complete the job!

        Helpful (4)

        Would there be any power gains with this Roush Axle-Back if so how much? And would the Flow Master Cat-Back give more power gains and how much? Thanks!

        • The Roush Axle-Back Exhaust will not add any additional horsepower to the Ecoboost Mustang but removes some restriction from the factory muffler which helps make some additional low end torque. The Roush Axle-Back provides a very durable construction as well as a strong, aggressive tone to give your Ecoboost the best possible sound.

        Helpful (2)
        Post Your Question
        10 More Questions
        Will this axle back work with the 2016 ecoboost convertible?? 1 answer
        Hi! I just ordered this exhaust along with the Flowmaster Scavenger Series Cut and Clamp Resonator Delete Y-Pipe (Item 389694) for my 2016 Ecoboost, and I read that they will fit fine together but I was just making sure before I tried to get them installed. Thanks! 1 answer
        Just to confirm, if I buy only this, I don't need to buy anything else for the mustang to sound different? Sorry, I don't know anything about exhausts. 1 answer
        I already have the https://www.americanmuscle.com/flowmaster-y-pipe-2015gt.html want to get a pair of these. Is there a video anywhere, with the Y-pipe/Roush axle-back setup? 1 answer
        I have Borla Touring cat back on my 2015 v6, If I get this can I just remove the borla axles and put roush without cutting on borla tubes? 1 answer
        I have Borla Touring cat back on my 2015 v6, If I get this can I just remove the borla axles abd put roush without cutting on borla tubes? 1 answer
        can these mufflers be installed with out a custom tune ? 1 answer
        We have Decibels limit in my country, do you know the DB level it would make on 2015 v6? 1 answer
        Is it possible to put quad tips on this exhaust? If so what brands would fit? 1 answer
        Will this be passable in CA? 1 answer

          Customer Reviews (100+) Write a Review

          Overall Rating 4.7

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:$100-$250

          • Loudness / Volume 4.323529 4.3
          • Exhaust Note 4.632353 4.6
          • Fit & Finish 4.897059 4.9
          • Bang For Your Buck 4.573529 4.6



          • 5/5

            Installation Time: Afternoon

            June 11, 2019

            Review from Roush Axle-Back Exhaust (15-17 V6)

            NOT BAD

            was hoping to would add a lot more sound to my car but overall a great product

            coolapozos

            Year: 2017 Submodel: V6

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            June 11, 2019

            Review from Roush Axle-Back Exhaust (15-17 V6)

            Best V6 Exhaust

            Gives it an aggressive sounds and very easy to install.

            NB

            Year: 2016 Submodel: V6

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 30, 2019

            Review from Roush Axle-Back Exhaust (15-17 V6)

            Vroom Vroom

            Turning heads when I pick up the rpms with the sound. Love it!

            DisGuy

            Year: 2015 Submodel: V6

            Helpful (1)

          • 4/5

            Installation Time: Shop Install

            Installation Cost: 0-$100

            May 30, 2019

            Review from Roush Axle-Back Exhaust (15-17 V6)

            good exhaust, not as loud as i thought.

            this is a good exhaust, and looks and sounds good on my 2015 v6, I thought this was going to be much louder based off the install/review video, and youtube videos, but actually its just a little louder and deeper than stock. there is a noticeable drone too. I am going to end up getting an x-pipe with it. Fitment was a little iffy too. but other than that, good product.

            jacob

            Year: 2015 Submodel: V6

            Helpful (0)

          • 5/5

            Installation Time: Less than 1 Hour

            May 23, 2019

            Review from Roush Axle-Back Exhaust (15-17 V6)

            2015 Mustang V6

            It sounds great easy to install. this with the Roush CAI great combo

            Theylookgood

            Year: 2015 Submodel: V6

            Helpful (0)

          • 4/5

            Installation Time: Shop Install

            Installation Cost: $100-$250

            April 09, 2019

            Review from Roush Axle-Back Exhaust (15-17 V6)

            Good for v6

            Much louder. Little drone. Sounds decent in my opinion. Great quality and looks amazing on the car. Good for the price.

            Andrew

            Year: 2016 Submodel: V6

            Helpful (0)

          • 4/5

            Installation Time: Afternoon

            March 20, 2019

            Satisfied

            I believe it was a great axle-back exhaust. I did wish it was just a tiny bit louder but obviously I should’ve bought something louder. This exhaust is for someone who wants something louder than stock but not too loud to cut off someone’s conversation that’s talking around the corner. Appearance is great also!

            fredi9654

            Year: 2015 Submodel: EcoBoost

            Helpful (0)

          • 2/5

            Installation Time: Less than 1 Hour

            March 19, 2019

            Clamp is too big, muffler fell off

            Clamp on my left side held up, clamp on the right side did not. I’ve had it on for about 15,000 miles or so. It fell off and my exhaust ended up on the highway. Had to pick it up on the highway. Tried to tighten it back up but the clamp is like too big and is maxed out so it wouldn’t tighten anymore. I work at a BMW shop so I had my friend weld in on for me so it won’t fall off again. I will be getting cat backs next time. It does sound like a Honda sometimes but you get over it.

            Fin

            Year: 2015 Submodel: V6

            Helpful (0)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: 0-$100

            March 10, 2019

            Review from Roush Axle-Back Exhaust (15-17 V6)

            Rumble

            For the V6, these can't be beat. Nice rumble, no drone.

            EC

            Year: 2016 Submodel: V6

            Helpful (1)

          • 2/5

            Installation Time: Less than 1 Hour

            February 23, 2019

            Review from Roush Axle-Back Exhaust (15-17 V6)

            2016 mustang v6

            Mine was not loud at all and it really was a very bad experience for me as all my friends were shocked that it does not make any noise. sounds very very close to stock.

            Hafiz

            Year: 2016 Submodel: V6

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            January 16, 2019

            Review from Roush Axle-Back Exhaust (15-17 V6)

            Great sound and great quality.

            This is a quality exhaust. Overall I am very happy with this purchase. The install was easy and took less than an hour. There is a little drone at 60, but not crazy. The sound is great. Great exhaust and great sound!

            TobyW

            Year: 2016 Submodel: V6

            Helpful (3)

          • 4/5

            Installation Time: Less than 1 Hour

            January 12, 2019

            Review from Roush Axle-Back Exhaust (15-17 V6)

            Roush axle back

            Easy to install, fits very well. Expected it to be a bit louder but that's just me.

            AlanT

            Year: 2017 Submodel: V6

            Helpful (3)

          • 5/5

            Installation Time: Less than 1 Hour

            December 27, 2018

            Review from Roush Axle-Back Exhaust (15-17 V6)

            Awesome

            It is awesome, if you have a V6, get it for a better sound.

            PavanKumarA

            Year: 2017 Submodel: V6

            Helpful (3)

          • 5/5

            Installation Time: Afternoon

            December 04, 2018

            Review from Roush Axle-Back Exhaust (15-17 V6)

            best

            i think this better tham flowmaster, because flowmaster have drone after 65mph. roush Axle back no drone.

            JiechengL

            Year: 2017 Submodel: V6

            Helpful (4)

          • 5/5

            Installation Time: Afternoon

            December 04, 2018

            Must get

            After searching for about a month reading up/watching countless hours of videos on almost every option of exhaust systems for the eco, I came to this. Hesitant of ending up with a ricer sound out of the 4 cylinder, you get the complete opposite. I could not be happier with my choice. If I was faced with the decision over again, I would definitely go with this 10/10.

            HunterM

            Year: 2017 Submodel: EcoBoost

            Helpful (5)

          • 5/5

            Installation Time: Afternoon

            December 02, 2018

            Review from Roush Axle-Back Exhaust (15-17 V6)

            Nice system

            Got these paired with BBK short tube headers and happy with the results. I highly recommend getting headers with these

            BluJ

            Year: 2017 Submodel: V6

            Helpful (3)

          • 5/5

            Installation Time: Less than 1 Hour

            November 30, 2018

            Roush axle back exhaust

            This roush exhaust gave my somewhat quiet EcoBoost the sound she was needing definitely woke her up. I now have it paired with a bbk catted down pipe and sounds even better!

            ZenyattaJ

            Year: 2016 Submodel: EcoBoost

            Helpful (4)

          • 4/5

            Installation Time: Afternoon

            November 25, 2018

            Review from Roush Axle-Back Exhaust (15-17 V6)

            Great exhaust , but

            Love the sound, However, the drone at low RPMs in higher gears between 1500 and 2000 RPM is horrible. I would say it is the equivalent of sinning on a twin engine prop plane between the motors . Running the car is sport mode eliminates this because it keeps the rps up.

            BobS

            Year: 2015 Submodel: V6

            Helpful (6)

          • 5/5

            Installation Time: Less than 1 Hour

            November 12, 2018

            Amazing

            The videos do not do it justice. It pops and bangs during launch control and will backfire like crazy. Really quite at low rpm so you won’t wake your neighbors up but put your foot to the floor and it comes to life. Great price, looks great, and installation was simple.

            TroyT

            Year: 2018 Submodel: EcoBoost

            Helpful (5)

          • 5/5

            Installation Time: Less than 1 Hour

            November 10, 2018

            Review from Roush Axle-Back Exhaust (15-17 V6)

            Roush axel back EX

            Sounds great and gives it a whole different feel. Loved it would greatly recommend it to anybody!

            St

            Year: 2015 Submodel: V6

            Helpful (7)

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