Guaranteed Free Delivery by 12/24! available on most items - Details

Talk to a Mustang Enthusiast
1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $5,000 For Your Mustang! Enter Daily

X-Force Varex Axle-Back Exhaust (11-14 GT)

Item 386426
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$0.00
Market Price $878.99 You Save 13% ($114.89)
Our Price

$764.10

FREE Shipping

Open Box from $343.85

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
In Stock

Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features, Video & Details

    • AmericanMuscle Exclusive
    • Varex Axle-Back with "Adjustable Sound"
    • Street Mode, Race Mode and Anywhere in Between
    • Electronically Controlled
    • Durable Stainless Steel Construction
    • 4" Polished Slant Cut Tips
    • Direct Bolt-On, No Cutting or Welding Required
    • (2) Remote Control Key Fobs Included
    • Fits 2011-2014 GT Mustangs

    Review & Installation Video

    Review & Install Video

    Hey everyone, I'm Justin with AmericanMuscle.com here with a new and exciting product that gives you the ability to change your exhaust tone on the fly. That's right. I'm taking a closer look at the Varex Axleback Exhaust system from X-Force fitting your 11 to 14 Coyote Power GT.X-Force is a relatively new exhaust company that's based out of Australia and gained a lot of popularity over there and slowly but surely their products are making their way over here to the U.S. where the demand and reviews have been favorable so far. Now again the Varex here is their bread and butter and is really exciting because it does give you full control of your exhaust tone at any time, on the fly, thanks to the remote control operation.Now a tunable exhaust system isn't exactly a new concept. Different companies have done it over the years with varying levels of success, and in fact Roush even implemented it recently on their new S550 cars. The biggest plus with the Varex here is you do have full control over your one at the push of a button here with the included key fobs from inside the car anytime. This means no getting out of the car, no messing with tools, anything like that.So how does it work? Well the Varex has an internal butterfly mechanism similar to a E-cutout that opens and closes with the key fob determining on how loud you want the muffler to be. Now keep it closed you'll have street mode which basically flows the exhaust through a chambered portion here in the muffler, keeping it quiet almost like a stock-like tone. But when you're ready to crank it up a little bit hold that button on the key fob all the way down. That butterfly mechanism swings open and at that point you have the race mode. It switches to a straight through portion of the muffler here giving you that very aggressive tone.The entire Varex system here has been constructed using durable stainless steel, polished to a nice bright finish and includes these four inch slash cut tips. Now the brains behind this operation here is this little control module that you do have to run inside the car using the included harness here but very straight forward and completely plug and play. These two ends plug into the muffler where this end plugs into the 12-vault source in your center console like we did with our 2011.Now guys we're going to call the install of the mufflers themselves about and hour which is standard for axle back and then maybe another 45 minutes to an hour getting your wire all situated.So, as always if you have any questions whatsoever with this exhaust system or if you need help with the install itself feel free to reach out to a Mustang expert. So if you're one of the many Mustang owners out there who can't quite decide if you want your car to be loud or quiet, well now you can have the best of both worlds here on the fly thanks to the Varex from X-Force available at AmericanMuscle.com.

    Adjustable Sound. The Varex Mustang Axle-Back Exhaust system features adjustable Varex performance mufflers that allow you to switch from a mellow Street sound to a rich throaty Race style exhaust note or anywhere in between the two with just a push of a button!

    How It Works. Varex performance mufflers utilize a sophisticated internal electronic butterfly valve mechanism to direct the exhaust flow within the muffler. In the open position the valve "uncorks" the exhaust flow allowing it to take the path of lease resistance to act more like a straight-through muffler for a rich throaty race style exhaust note. In the closed position the valve blocks the exhaust flow forcing it through the chambered paths to produce a classic mellow street friendly sound. This unique design is perfect for personalizing the power and sound levels of your Mustang to suit your own specific needs.

    Stainless Steel Construction. Manufactured from high quality stainless steel for it's superior durability and corrosion resistance, this Varex Axle-back features two adjustable chambered mufflers that end  with massive 4.0" diameter polished stainless steel tips that exit in the stock location for impressive muscle car looks and sound.

    Direct Bolt-On Installation. Engineered to be a direct upgrade replacement, this Varex axle-back will easily bolt up to the factory piping without any modifications required for a straight forward installation. The control module can be powered by your Mustangs 12v accessory outlet for plug and play operation or connected to a 12v source - the choice is yours.

    Application. This Varex Axle-Back Exhaust is designed as a direct fit bolt-on upgrade for the 2011 to 2014 GT Mustangs equipped with the DOHC Coyote 5.0L V8 engine.

    Fitment: 2011 2012 2013 2014 Details

    MPN# ES-FM05-RVMK

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

    What's in the Box
    • (1) Passenger side muffler assembly
    • (1) Driver side muffler assembly
    • (2) Exhaust Hangers
    • (1) Control Module
    • (2) Key FOB's
    • Wiring Harness
    Installation Info
    Tech Specs
    Axle-Back Exhaust Specifications
    Piping Material:Stainless Steel Tip Material :Polished Stainless Steel
    Piping Size:2.75"Tip Size:4"
    Muffler Type:ChamberedFitment:2011-2014 GT
    Will it fit my Mustang?

      Customer Photos (7) Submit Your Photo

      View All 7 Photos

        Questions & Answers (26)

        5 Top Rated Questions

        Since this connects to the 12v, won't it drain my battery when the car is off?

        • The X-Force Varex Axle-Back Exhaust can be attached to any 12v battery source, and if it is wired in a way that is always drawing current from the battery, it can drain it. We would recommend wiring it with either a switch or in a way that it only gets current when the ignition is in the on position.

        Helpful (3)

        Do i need to get the smart box or can i still open and close valves without the box?

        • The valves can be opened and closed with the included control module and key fobs. The X-Force Varex Smartbox is not needed to control them.

        Helpful (0)

        I have 2012 Mustang GT with VMP GEN3 Supercharger, Roush Axle-back exhaust, Cat delete, H Pipe along with KOOKS long tube headers the car is extremely loud specially the cold start. I have read the reviews I guess this is the exhaust setup for me I would like to go with it. But I would like to know if I can install The existing ROUSH SQUARE TIPS on it? If so the butterflies would still work as they are supposed to?

        do these have drone?

        • The X-Force Varex Axle-Back Exhaust will have some drone while at certain speeds and load.

        Helpful (0)

        I have a 2014 Mustang GT. She has Kooks Long Tube headers with KooKs off-road x-pipe with Flowmaster outlaws. She’s very loud, sounds amazing but a little too loud for cruising. How loud will this cat-back be compared to this set up with the valves closed? And will the valves open be louder then the set up not. I was in the market for a new axle back system and exhaust cutouts until I saw this.

        10 More Questions
        Do these come with the wires to to hook into your car to power them or no do you have to buy that seperate 1 answer
        If I have a 2step Will I be ok to run this 1 answer
        I have the 3 inch Ford performance cat-back exhaust system. Will this work with it? 0 answer
        When you guys did the video was that with the resinators in or without? 1 answer
        Can this Axle-back be used with Borla Over Axle Pipes? 1 answer
        My 2014 5.0 is equipped with Supercharger and full bolt ons. Is it safe to use this axle back ? Will it causing any air flow issues when it's closed?? 1 answer
        Why does it keeps burning out the fuse? I already replaced it 4 times, I checked all connections and everything looks good. 1 answer
        Any drone while on cruise with them closed ir opened ? 1 answer
        Does this exhaust system use the stock exhaust hangar locations? 1 answer
        Is there any trick to center the exhaust tips 1 answer

          Customer Reviews (29) Write a Review

          Overall Rating 4.6

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:$100-$250

          • Loudness / Volume 4 4
          • Exhaust Note 4.535714 4.5
          • Fit & Finish 4.464286 4.5
          • Bang For Your Buck 4.357143 4.4



          • 4/5

            Installation Time: Afternoon

            September 21, 2019

            Great Product but..

            Nice and quite when closed, and not to much louder when open, but its noticeable. Though most of my setup is stock so I feel after long tubes and cat delete this will sound amazing when opened and quiet when closed. So the installation of the mufflers and tips wasn't too bad, but when It came to hooking up the mufflers to the harness, the harness was not long enough. There was plenty of cable going from the interior to a muffler but once one muffler was connected the connector to the second muffler didn't reach. So we had to cut and make it longer. Would have given five stars but that's something that needs to come out the correct length from the manufacturer for these cars.

            HarryB

            Year: 2011 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            January 26, 2019

            Jack H

            Just what I was Looking for ! loud when you wont it and not when you need it .

            JackH

            Year: 2011 Submodel: GT

            Helpful (0)

          • 4/5

            Installation Time: Shop Install

            Installation Cost: 0-$100

            December 17, 2018

            X-Force Varex "Tunable" exhaust

            Really neat concept and put into practice pretty successfully. Love the ability to switch on the fly. Biggest complaint is that I was hoping for about 10db louder than what these can do. Oh well. I did try to do a self install. I successfully removed the driver's side factory exhaust no problem but then discovered that the drop-in-fit was more of a "file-to-fit" so I wound up letting a muffler shop do the install. Cost me $100 bucks and well worth it. I still need to dress out and route the controller wires but that'll be easy. So my only real complaint is that I wish the system was a tad bit louder (10db or so) when fully open. Hence, four stars instead of five.

            JohnA

            Year: 2014 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Less than 1 Hour

            November 22, 2018

            X force varex

            Great I am so happy now I can take my car on long road trips

            RoyI

            Year: 2011 Submodel: GT

            Helpful (1)

          • 4/5

            Installation Time: Less than 1 Hour

            November 07, 2018

            X-Forxe Mufflers

            I bought these mufflers thinking I would keep my same loudness but be able to quiet it down whenever I wanted to but upon installing them at the open position my car go significantly quieter which I didn't like it does what it says but these mufflers at open are too quiet for me good product just not for me

            EddieM

            Year: 2014 Submodel: GT

            Helpful (2)

          • 5/5

            Installation Time: Less than 1 Hour

            July 06, 2018

            exhaust

            unreal,quiter than stock closed ,but sounds great open,not real load,work great

            EdC

            Year: 2014 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Afternoon

            June 28, 2018

            X-Force Varex

            Exactly what I wanted - quiet when I'm not looking for attention or do not want o disturb others, and able to exhale as hard as possible when necessary. Took a little patience to get the tips exactly where I wanted them and I was able to do it without any modifications. Additional install time was to hide the wires for the power.

            RobertG

            Year: 2012 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Less than 1 Hour

            May 24, 2018

            Your neighbors won't hate you!

            Worth every penny and more. Almost silent when I leave in the morning, but coming home I can unleash the beast! For me it was too quiet wide open with the rest of the exhaust stock, but I threw a cat to axle H-pipe on and I couldn't be happier with the sound now.

            JordanH

            Year: 2014 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Shop Install

            Installation Cost: $250-$500

            April 13, 2018

            exhaust vari tune

            nice product,remont control great sound nice stanless

            JeffreyO

            Year: 2014 Submodel: V6

            Helpful (4)

          • 5/5

            Installation Time: Afternoon

            February 13, 2018

            Best exhaust available

            These mufflers are perfect and they are really easy to install,did it by my self but an extra hand would definitely help a lot.

            RamiroC

            Year: 2012 Submodel: GT

            Helpful (3)

          • 5/5

            Installation Time: Afternoon

            February 08, 2018

            Incredible!

            I had muffler deletes and a resonator delete before I had this axleback, and it sounded decent. Then I got an off-road H pipe, and the sound was incredible, but it was waaay too loud. It was impossible to drive around, and the drone was unimaginable. Threw these bad boys on, and my entire world changed. With the valves open all the way, there is no drone, but the volume is still there. There isn't as much popping, but I'll learn to live with that. With wide open throttle, the sound is just pure muscle. I would definitely recommend taking off your cats (and/or installing longtubes) with these axlebacks, just so you can unleash your beast whenever you want. With the valves closed, it sounds a little bit like an old school muscle car, with a very quiet tone. I can't hear the closed exhaust note over the sound of my radio when driving. I switch them on whenever I'm around any cops, or whenever I get a headache. Overall, this is a great item. Love it, and I'll probably invest in some longtubes in the future. Follow me on instagram @HoonHoodie - I'll be uploading some exhaust videos soon.

            Hoodie

            Year: 2011 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Afternoon

            November 21, 2017

            Awesome

            I love this axleback when you need to be quiet in the Neighborhood it’s quiet.when you open the Exhaust it sound better than the gt500 exhaust

            Justin17

            Year: 2011 Submodel: GT

            Helpful (5)

          • 5/5

            Installation Time: Less than 1 Hour

            November 06, 2017

            very good

            very good, looking very pretty, i am satisfied. Best choice.

            ShamilB

            Year: 2015 Submodel: GT

            Helpful (4)

          • 1/5

            Installation Time: Afternoon

            October 02, 2017

            Broke after one day

            After struggling to get them to line up correctly for 5 hours I finally got them on then I was very disappointed to hear that on "race mode" or all the way open they are barley even louder than the stock vehicle and are not anything you want to put on your car if you want it to be loud

            Outlaw

            Year: 2011 Submodel: GT

            Helpful (4)

          • 5/5

            Installation Time: Less than 1 Hour

            October 01, 2017

            Love this new exhaust!

            Took about an hour and a half to align it and wire it up. It sounds real quiet like stock, and not too loud when they're open but when I floor it then It sounds completely straight piped well worth the money!

            Charliee

            Year: 2014 Submodel: GT

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            September 17, 2017

            Installed on 16 gt

            Bought this axleback for my 16 gt they do not fit right out of the box I had to cut a little bit of the pipe on the inlet side to match the bend of my existing pipes and cut and move the hanger was bit of a pain but works and looks good in the end. Paired with my flow master scavenger x pipe and sounds so good very nice tone and volume could be a bit louder but it's good enough I'm sure it will sound even better once I install my long tubes.

            Evil550

            Year: 2016 Submodel: GT

            Helpful (6)

          • 4/5

            Installation Time: Less than 1 Hour

            September 14, 2017

            Excelent sound.

            the original exhaust pipe carries three couplings. this only takes two. it is more difficult to focus.

            Rmrsl

            Year: 2011 Submodel: GT

            Helpful (5)

          • 4/5

            Installation Time: Afternoon

            May 17, 2017

            JUST WHAT I WANTED

            As stated by previous, reviewers this axle-back exhaust system is expensive. The fit and finish warrant the added expense. The automatic butterfly motor on each can also warrants the added expense. The ease of opening or closing the valves from inside the cabin is just what I wanted. Mama hates allowed car, daddy loves allowed car. Varex delivers exactly that with the X-Force axle-back exhaust system. The only problem I have encountered so far is that my gas mileage is gone down as I can't keep my foot out of the floorboard.

            Paladin06

            Year: 2011 Submodel: Other

            Helpful (5)

          • 4/5

            April 23, 2017

            Sounds amazing

            This exhaust sounds awesome with no cats. Getting the exhaust to fit in the correct location was a pain, but got it done.

            CraigT

            Year: 2014 Submodel: GT

            Helpful (6)

          • 5/5

            Installation Time: Afternoon

            April 15, 2017

            xforce cat back

            Nice install. Run around quite until the other Detroit motors show up and let them know what you think after the touch of a button. Passenger side was a little difficult to center. Make sure you have a Dremel with cuttof wheels.

            RobertC

            Year: 2014 Submodel: GT

            Helpful (4)

          Related Mustang Categories