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XForce Varex Axle-Back Exhaust (11-14 GT)

Item 386426
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      Video Review & Installation

      Hey everyone, I'm Justin with 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

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • 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


      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

      XForce ES-FM05-RVMK

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      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

      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

      Customer Reviews (30)

        Questions & Answers

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