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Magnaflow Competition Series Axle-Back Exhaust w/ Black Quad Tips (13-14 GT500)

Item 48057
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      Product Information

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


      • Aggressive Muscle Car Sound
      • Stainless Steel Construction
      • 3" Mandrel-Bent Tubing
      • 4" Quad Black Finished Tips
      • Muffler Delete
      • Fits 2013-2014 Shelby GT500 Mustangs


      Add Horsepower. Stop choking your Shelby GT500 with a factory exhaust system and enjoy more horsepower with a Magnaflow Competition Axle-Back. By reducing back pressure and giving your Mustang GT500 a free-flowing exhaust, you'll see great power and torque gains.

      Aggressive Muscle Car Sound. The Magnaflow Competition Axle-Back has a straight through muffler delete design for minimal restriction and the most aggressive sound you can get with the factory cats still in place all while improving exhaust flow for more power.

      Magnaflow Quality. Constructed from 100% stainless steel for long life and durability, this Magnaflow Competition axleback exhaust system features free-flowing mandrel bent 3" tubing and two quad 4" black finished tips that exit in the stock locations for impressive styling.

      Application. Made to be a direct bolt on, this Magnaflow axleback will bolt straight up to the factory piping without any extra modifications required on your the 2013-2014 Shelby GT500 to give it the deepest, most aggressive sound possible.

      Note: Coupon codes cannot be applied to this product.

      Fitment: 2013 2014 Details

      MPN# 15177

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (34)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 34 customers

      Installation Time: Afternoon

      Installation Cost: $100-$250

      • April 21, 2019

        5 2014 GT500 - CobraConvertible2012 Installation Time: Less than 1 Hour

        Magnaflow Competition

        Installed relatively easily, took longer to get the OEM exhaust out than to install the new exhaust. Sounds great, about a 20lb weight drop, perfect.

        Helpful (0)
      • April 18, 2019

        5 2013 GT500 - ghettothemonkey

        Great sound and look

        The stock exhaust on the GT500 is great honestly, but this is how it should have sounded from the factory. The car sounds and feels so much different. When cruising there is no discernible drone but they are extremely loud when you want them to be. Louder than I expected, but not louder than I like. The tips are more staggered than the stock exhaust tips, so expect them to poke out the back end a little bit. Spend a little extra time adjusting them to your liking if you install them yourself (or have a friend do it for you). The tips really fill out the rear valance so be sure to check them after driving with them a bit and readjust in case they wind up resting against the bumper so you don't melt it. Took about an hour and a half without a lift and a couple of beer breaks. I had some buyers remorse initially after spending $727 on axle-backs but I do not regret this purchase at all. Received them 2 days after ordering, and the box was huge. Packaging was excellent.

        Helpful (0)
      • March 12, 2019

        5 2013 GT500 - Dissapointed Installation Time: Less than 1 Hour

        Got one right

        The pipes bolted right in , didnt need to bend anything. Sounds great

        Helpful (0)
      • July 07, 2018

        5 2013 GT500 - Chris Installation Time: Less than 1 Hour

        Great sound!

        I was researching aftermarket exhaust for a while and was hesitant to change from my OEM setup on my 2013 GT500. I’m so glad I got these. They are perfect! Just the sound I was looking for. They have a nice deep rumble when driving and plenty of back-rap on deceleration. They aren’t obnoxiously loud, but definitely turn heads on the street. Black exhaust tips look great too!

        Helpful (4)
      • May 13, 2018

        5 2014 GT500 - Rhetrax Installation Time: Afternoon

        Loud but fun

        Pieces came VERY well packed, no cosmetic blemishes whatsoever. They are much lighter than stock--by a good 20lbs or more per side. Installation was without issue once I figured it out; first side took much longer than second. One side fit right out of the box, other side needed some slightly adjustment to the rearmost hanger before it wouldn't sit up against the ABS rear valence, but nothing major. They retain the heavy H-pipe rumble with the rest of the stock exhaust system, but will literally ring your ears if you punch it with any surface next to you with the windows down. Standing behind the car while it was being dynoed shook the concrete foundation of the building and fluttered any loosing clothing, it is seriously loud, even with the rest of the exhaust stock. It would be almost ludicrous with an off-road X-pipe. The tone under low load is almost like a double-volume stock exhaust, but under medium or higher load it brings in a very loud resonance that the stock mufflers completely dampened. It sounds like a straight-piped race vehicle, even with cats and stock exhaust otherwise in place. Some people may find it too much, and I won't blame them, but you won't get into that sound while driving normally. It only shows up when you give it a good amount of load, when you want the car to really open up anyways. Highway drone in 5th is definitely there, but pushing up to 6th completely negates it. I can hear the rear drive gears more than the exhaust cruising at 75mph. Supercharger whine gets overpowered by the exhaust volume, however, unless you're above 5,000rpm, at which point you can hear it if you try (stock pulley). I don't think some simple finished pipes are worth near to $700, but it's the best you're going to find. With that being said, the welds and finish are all amazing, and the tips are three dimensional and not just simply rounded flat sheet metal. Overall, worth the buy, compared to other options. Set aside more time than you'd think if you're pulling the stock mufflers for the first time, since they require quite a bit of finagling.

        Helpful (6)
      • December 29, 2017

        5 2014 GT - Mark Installation Time: Less than 1 Hour

        These tips will wake the Dead LOL!!!

        I have had these on my 14 GT 500 for over 2 years now best sound ever. It is not my daily driver so I wanted the big block 60's muscle car sound got it and then some!!!!! I had herd the other magnaflow option for this car (MagnaFlow 3" Street Series Axle-Back) as they only offer 2 systems for axle back and was not impressed. It was almost identical to the factory sound and almost $1,000. As there are not many of these GT 500 cars it is really difficult to get an IN Person look and listen"..... Going on you tube also did my ears no justice. So these comp axle back tips that I got my buddy 2 blocks away says it sounds like a 427 dual quad 67 Corvette with side pipes. These pipes have an extremely deep rumble when you hit the throttle. When you are just cruising they have a nice tone to them. When you put the pedal to the floor be ware who is around "cops" in particular. It is extremely loud meaning a deep resonating tone that can be herd quite a ways away. I can not tell you power was also increased if you can imagine on the vehicle which alreday has so much to start. Installation was easy 45 minutes on my back in the garage no lift needed. If you want to be loud and proud get these no regrets. If you live in a area where you can set off car alarms you will. Hope this info is helpful. Cheers, Mark

        Helpful (7)
      • December 26, 2017

        5 2013 GT500 - Slingblade Installation Time: Afternoon

        Axle back muffler delete !

        Nice quad tip free flowing exhaust ! There not for you if you like to here the whine of the super charger ! Does seem like it helps the Performance! The quad tips they seem to not set right on one side because there rubbing up against the Body !

        Helpful (4)
      • November 12, 2017

        5 2013 GT - ChandlerM Installation Time: Less than 1 Hour

        New tone

        Loud, Raspy, and Mean. Needed some bending on the hangers.

        Helpful (4)
      • October 02, 2017

        3 2014 GT - AlexanderY Installation Time: Afternoon

        Nice but wrong connectors,

        The sound of the exhaust is amazing, super load growl, and spits like crazy, some people don't like that kind, but I love it, only big problem is that this exhaust set up doesn't fit a Magna flow exhaust pipe tube, it only fits the stock exhaust pipe set up, so there was some cutting and fitting issues to fit to an existing magna flow exhaust tube, but once installed, get some ear muffs, its LOUD,

        Helpful (3)
      • August 23, 2017

        3 2013 GT500 - PatrickD Installation Time: Less than 1 Hour

        Not loud enough !

        They sound ok, but not loud enough for me..So i'm going to be buying a new louder Axle-Back Exhaust to replace this soon.

        Helpful (3)

      Questions & Answers (18 answers)

      5 Top Rated Questions

      Would installing this kit effectively delete the factory resonators? I am confused as to where they are located but I have found lots of people saying their Shelby sounds much better without them.

      • This axle back kit would replace the OEM resonators yes.

      Helpful (0)

      Will this axleback fit the Borla ATAK mid pipes I have on the car?

      • Unfortunately, due to the size difference between this kit and the Borla ATAK pipes, these would not be compatible unless modified.

      Helpful (0)

      Is it possible for these to fit a 2014 gt?

      • Unfortunately I cannot guarantee fitment on a 14 GT as this axle-back exhaust is designed for 13-14 GT500 models.

      Helpful (0)

      Would these tips fit on a 2014 v6 mustang with BBK off road X-Pipe with long tube headers? And of course I would cutt the bumper to make the GT500 rear valance fit??

      • The Magnaflow Competition Axle-Back Exhaust is made to fit the 13-14 GT500. We can not guarantee fitment on other models.

      Helpful (0)

      Would these tips fit on a 2014 v6 mustang with BBK off road X-Pipe with long tube headers? And of course I would cutt the bumper to make the GT500 rear valance fit

      • Unfortunately the Magnaflow Competition Axle-Back Exhaust will not fit a 14 V6 model as they are designed to fit a 13-14 GT500 and will not fit any other model.

      Helpful (0)
      Post Your Question
      10 More Questions
      Will these pipes fit my 2012 GT as long as the bumper is cut? 1 answer
      Will this fit my 2012 GT? I saw a review from someone who has a 2011 GT with them installed. 1 answer
      Do you have this exhaust in chrome for 2013 and 2014 mustang gt 1 answer
      Can this be installed on a 2014 V6 and if not are there any quad exhaust tips that can be installed on a 2014 V6? 2 answers
      Can you get this with chrome tips ? Do they guarantee proper fit? Does it come with hangers or does work with the stock ones 1 answer
      Does this exhaust have a bad drone? 1 answer
      The photo is misleading, the one on right looks like the slanted tips like stock exhaust the one on the left looks flat and staggered? Which way do they come are the tips slanted like the factory exhaust tips or flat (squared off) and staggered? Maybe my eyes are playing tricks on me but in some photos looks one way others looks the other way? 1 answer
      Does anybody have a sound clip on a 2014 5.0? 1 answer
      Does this kit make it so my Gt500 wont pass safety or emissions in utah? I would like to purchase this item however Im not sure about passing due to the fact there is no muffler? 1 answer
      Will my '14 Gt 500 still pass Utah state Emissions and safety inspection with this? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Right tail pipe assembly
      • (1) Left tail pipe assembly

      Tech Specs

      Axle-Back Exhaust Specifications
      Piping Material: stainless steel Tip Material: Black finished stainless steel
      Piping Size: 3" Tip Size: Quad 4"
      Muffler Type: none Fitment: 2013-2014 Shelby GT500

      Will It Fit My Mustang

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