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Borla Over-Axle Pipes (11-14 Mustang GT, GT500)

Item 397308
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$554.99 (pair)

FREE Shipping Market Price $638.99 You Save 13% ($84.00)

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      Video Review & Installation

      These are the Borla Over-Axle Pipes for 2011 to 2014 S197 GT and GT500. These are gonna be a good option for anyone looking to upgrade to a Borla X-Pipe and Axle-Back exhaust in stages, and you're looking for the budget-friendly stainless steel option. So an entirely new exhaust system can get expensive fast, especially if you want a nice setup. But there are ways to upgrade in stages. Normally, you get a new set of over-axle pipes when you purchase the cat-back. If you purchase just an axle-back and then pick up a mid-pipe down the road, you're looking at still having your stock over-axle pipes. You only get a new set of over-axle pipes for the cat-back or if you purchase them separately. Borla offers these over-axle pipes as a separate upgrade, so you don't have to purchase a whole Borla cat-back at one time to get new over-axle pipes. For the install, you can plan on spending an hour or two to get it all done, and you can expect a one out of three wrenches on the difficulty meter. The over-axle pipes are made to work with the Borla X-Pipe and Borla Axle-Back. Some people have made them work with other setups, but if you're looking to just bolt these right on and go, then you should already have the Borla X-Pipe and a Borla Axle-Back. Otherwise, if you wanna make these work with something else, you may need to tweak or bend some things to get these bolted up. Looking at the big picture here, the stock over-axle pipes have resonators in them, and they're also kinked which it doesn't help with exhaust flow. So not only are they restricted because they have those resonators, but they're also restricted for flow reasons. Eliminating those kinks and the resonators is gonna open up some sound and performance from the S197. So there's not much difference between these over-axle pipes and the stock ones. There's only so much that you can change there, but the difference is gonna be the elimination of those resonators which would be in the straight portion of the pipe and at the other end. The factory pipe has to flatten out here to fit on the car, and the factory pipe makes a funky S-Type of curve. These pipes eliminate that and the resonators, and you just have smooth manual bends instead, so that's where the benefit is gonna come from. Your sound gains are gonna change depending on the axle-back and mid-pipe setup that you have on your car, so keep that in mind if you decide to change your mid-pipe or headers or axle-back down the road. The sound you get from your exhaust is ultimately gonna change depending on your setup. If you have an off-road setup, it's gonna be louder. If you have a Borla ATAK versus a Borla Touring, it's gonna be a different sound. The over-axle pipes will open up some flow, but, ultimately, the sound that you can expect is all gonna depend on the rest of your exhaust setup. As far as materials, these are full stainless steel pipes, so they're gonna be perfect for all cars, even the daily's that see harsh elements and road soil. Stainless steel is always gonna be your best option when it comes to exhaust components because of its long lifespan and corrosion resistance. When it comes to price, you're looking at spending just south of $350 mark for these pipes. Like I mentioned earlier, the whole point of this product is to upgrade your exhaust in sections, so you don't have to shell out a ton of money for an upgraded system all at once. Some of the top of the line cat-backs are over a thousand bucks or very close to it, and if you pair these pipes with a Borla aftermarket Axle-Back and matching X-Pipe, then you've made yourself a full cat-back, and you didn't have to shell out that much money all at once. As far as the install, it's not gonna be a difficult one at all. You can plan on spending an hour or two to get it all done, and you can expect a one out of three wrenches on the difficulty meter. Your stock over-axle pipes will come out easily enough. It's just a few bolts to loosen the clamps and the mid-pipe and the mufflers to get those out. You'll just need to sneak the pipes out. These pipes will then install the same way that the stock ones came out, and they are side specific, so just be careful there. I'd say to make sure you go over the bolts and retighten everything down once your car has had some run time. You wanna make sure that you avoid any exhaust leaks. All right. Wrapping things up here, these are the Borla Over-Axle Pipes for 2011 to 2014 GT Mustangs. As always, you can check them out more online right here at

      Product Information

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

      Features & Specs

      • Intermediate Over Axle Kit
      • Less Restrictive than Stock
      • 2.75" Mandrel-Bent Stainless Steel Tubing
      • Natural Finish
      • Fuel Line Heat Shields
      • Million Mile Warranty
      • Made in the USA
      • Sold as a Pair
      • For Use w/ Borla Rear Section Kit and X-Pipe
      • Fits 2011-2014 GT and GT500 Mustangs


      Performance You'll Love. While the stock exhaust system might be enough for some, you can make your Pony sound more aggressive and deep while performing better using these Borla Over-Axle Pipes. When combined with the Borla Rear Section and X-Pipe (both sold separately), these Over Axle Pipes finish off the cat-back system. There's absolutely no drone at any speed, no matter the gear you're in. You'll love these pipes and your passengers will be impressed with how they sound.

      Built to Last. These Over Axle Pipes are designed to directly replace the factory ones and are made of high-quality mandrel-bent stainless steel. That means you don't need to worry about them warping or becoming corroded as they can withstand the rigors of everyday use.

      Excellent Quality. Borla has built up a serious reputation for making some of the finest exhaust systems in the industry. You can place your confidence in these Over Axle Pipes because they add solid value to your S197 Pony. Their diameter measures 2.75 inches, allowing exhaust to flow freely and your engine to breathe as it should. Borla uses custom tuning to ensure these pipes work great with your specific GT or GT500 Mustang.

      Application. Borla engineered these Over-Axle Pipes to work with all 2011-2014 Ford GT and GT500 Mustangs when combined with the Borla Rear Section Kit and X-Pipe to form a complete cat-back system.



      Borla 60521

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Over Axle Pipes
      • (2) Fuel Line Heat Shields


      Customer Reviews (32)

        Questions & Answers

        10 More Questions

        Will It Fit My Mustang

        • Boss 302 - 12, 13
        • GT - 11, 12, 13, 14
        • GT500 - 11, 12, 13, 14

        For Use w/ Borla Rear Section and X-Pipe to Complete a Cat-Back System

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