XForce Twin 3" Cat-Back Exhaust System w/Oval Varex Mufflers (15-17 Mustang GT Coupe) ES-FM15-02-VMK-CBS

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Regular price: $1,850.00
Sale price: $1,572.50
(You save $277.50 )
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Unleashing the 5.0l Coyote V8 in your 2015-17 Ford Mustang GT fastback couldn’t be easier with an X-Force 304-grade stainless steel cat-back exhaust system. Featuring Twin 3" stainless cat back system with Varex valved oval rear mufflers for a controlled sound, you choose what your exhaust sounds like. 

Using a twin 3” bore throughout combined with the straight-through centre muffler and rear mufflers has led to maximum back-pressure reductions, whilst the dual VAREX VALVE-equipped oval mufflers puts you in control of your V8’s soundtrack – all at the touch of one of the supplied key fob buttons.

Sound volume and tone are both greatly enhanced thanks to our VAREX valve controlled mufflers and this system provides owners with a setup that’s as quiet as the stock exhaust when you want, or that unleashes the unmistakable sound of the 5.0 V8 where and when you want. To take it to the next level, add a SmartBox for the ultimate in control using our patented Bluetooth smartphone app to provide pre-set automatic valve control, geo fencing and more. 


  • Twin 3″ cat back system
  • 304 stainless steel
  • Tig welded construction
  • Volume adjustable Varex valved oval rear muffler with remote control
  • Dual 4″ double wall slant cut polished stainless steel tips
  • Straight through design for maximum power and robust sound
  • All Gaskets, Nuts & Bolts included for fitment







Fitment: 2015 Mustang GT Coupe 2016 Mustang GT Coupe 2017 Mustang GT Coupe

CA Residents: WARNING: Cancer and Reproductive Harm

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  • 4
    Decent exhaust

    Posted by Unknown on Nov 16th 2023

    Pretty good product, especially for the price. Few complaints, product does not contain flange/connecter for headers to midpipe if you have aftermarket headers, will need fabrication for it. The instructions/pics for wiring aren't the best, and the cord for the cigarette lighter could be longer. Other than those small things the system looks and sounds great, less coyote and deeper tone. very quiet closed and still pretty quiet in the open position, it is the oval mufflers so it makes sense. The functionality of the valves with ability to partial open valves completely is great.