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Magnaflow Street Series Axle-Back Exhaust (11-12 GT, GT500)

Item 48039
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      Review & Installation Video

      Hey everyone I’m Justin with and I’m checking out MAGNAFLOW’s street series axle-back for your 2011 or newer Mustang GT. The street series lives up to its name by offering a very streetable exhaust tone. It’s mellow enough to drive around town, but provides plenty of bark when you hit that loud pedal. The exhaust is constructed from 100% stainless steel and features mandrel bent 3 inch tubing, all exiting out these dual polished 4 inch tips. Install is a breeze and should take you no more than an hour using standard hand tools. Now let’s hear how MAGNAFLOW’s street series sounds in comparison to your factory exhaust.

      Product Information

      Features, Description, Reviews, Specs & Installation


      • Classic V8 Sound
      • Street Series Muffler - Straight-Through Design
      • Durable Stainless Steel Construction
      • 3" Mandrel-Bent Tubing
      • 4" Polished Stainless Steel Tips
      • Fits 2011-2012 Mustang GT and 2011-2012 GT500


      Save Money. Get the sound and sporty good looks that your 5.0-powered 2011-2012 GT or supercharged 2011-2012 5.4-powered GT500 deserves without having to buy a complete catback system with the Magnaflow Street Axle-Back system.

      Classic Musclecar Sound. The Magnaflow Cat-Back Exhaust System includes a set of two Street Series Mufflers that feature a free-flowing, straight-through perforated stainless steel core, with stainless mesh wrap and acoustical fiber fill to deliver that smooth, deep muscle car tone.

      Quality Construction. Constructed from 100% stainless steel for long life the Magnaflow Street axleback exhaust system features two Street Series mufflers with polished 4" stainless steel tips. The 3" tubing is mandrel bent to improve exhaust flow and to assure a perfect fit.

      Application. Made to be a direct bolt on, this axleback will bolt right up without any extra modifications required on the new 2011-2012 Mustang GT or 2011-2012 GT500 for a deeper classic V8 sound.

      Note. Coupon codes cannot be applied to this product.

      Fitment: 2011 2012

      Magnaflow 15593

      CA Residents: WARNING: Cancer and Reproductive Harm -

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Right muffler assembly
      • (1) Left muffler assembly

      Tech Specs

      Axle-Back Exhaust Specifications
      Piping Material: Stainless Steel Tip Material : Polished Stainless Steel
      Piping Size: 3" Tip Size: 4"
      Muffler Type: Straight-through Fitment: 2011-2012 GT and 2011-2012 GT500 Mustangs

      Customer Reviews (14)

      Write a Review

      Ratings Summary

      4.6 out of 5 overall rating from 14 customers

      Installation Time: Afternoon

      Installation Cost: $100-$250

      • April 20, 2020

        1 2012 GT500 - Mario

        Not satisfied at all

        Ordered my 1st set of mufflers, came in damaged, both inlet tubes were bent like they were dropped. I did find and AMR # inside my box, indicating the order was previously returned due to being damaged. Called AM and they offered a return. 2nd set of mufflers came in, again both inlet tubes bent, mufflers were dirty, looked like a 3rd grader had welded them together. The exhaust tip had mismatching writing on them "Magnaflow" some were like ghostwriting the other was a faded black. It also has scuff marks on the tips. I never had an opportunity to install them.

        Helpful (0)
      • October 08, 2018

        5 2012 GT - Amilcar Installation Time: Shop Install Installation Cost: $100-$250

        True Muscle Car Sound

        I had these mufflers installed recently along with the Ford Racing 1 piece driveshaft. I am a 55 year old guy who enjoys his 2012 Kona blue ride and wanted to upgrade the performance and sound of his pony. The car now sounds more like a muscle car and the driveshaft performs as advertised. For those who are worried that the sound might be obnoxious, it is not. The sound is muscular with the right touch of bass. I'm glad I did the upgrade, it was worth it.

        Helpful (3)
      • September 04, 2018

        5 2011 GT500 - BenjaminT Installation Time: Less than 1 Hour

        Shelby GT 590

        These went on easy and exceed my expectations. They look good and sound great.

        Helpful (3)
      • August 12, 2018

        4 2012 GT500 - MikeA Installation Time: Less than 1 Hour

        A lot quieter

        I had the outlaws on. They were too loud. The MF Streets look awesome, just still trying to get used to the difference. Took me under an hour to remove, and install new

        Helpful (4)
      • July 10, 2018

        5 2012 GT - JeffA Installation Time: Less than 1 Hour

        Perfect tone

        Truly the grown man's exhaust. It is noticeably louder at idle and under load but the tone and rumble is much deeper and muscular. I'm an older guy and the Mustang now sounds like the muscle cars of my youth without being obnoxious. The installation was dead simple and I was able to do it by backing the car onto ramps. I was too lazy to loosen the over the axle pipes and was still able to easily jiggle everything off and then back on.

        Helpful (6)
      • April 19, 2016

        4 2012 GT500 - Mach Installation Time: Less than 1 Hour

        Magnaflow Street on a 2012 GT500

        First off, the build quality is exceptional and the fitment is perfect. I was hoping for a muffler that retained the stock tone with a little more sound. These mufflers are slightly quieter than stock except at high RPM's. They produce a more bass-ey and monotone sound, which, personally, I don't care for. If you're looking for something that is quiet and produces more power, these are great. I have a 2.8L Kenne Bell and these mufflers made 17whp and 11wTQ over the stock ones. If you're looking for something that retains the nice growl and full spectrum sound, may want to look at another option.

        Helpful (6)
      • November 13, 2015

        5 2012 GT - JB Installation Time: Less than 1 Hour

        Awesome Mod

        Just put these on my 2012 GT and everything went smooth as silk! Easy to install and the tone is exactly what I was hoping to get. Could be just a touch louder, but all in all, an awesome mod!

        Helpful (8)
      • July 28, 2012

        5 2011 GT500 - RollinOut Installation Time: Less than 1 Hour

        Exactly as described great product

        I am very pleased with my product Fast shipping and correct item as ordered

        Helpful (7)
      • July 13, 2012

        5 2011 GT - cyclone34 Installation Time: Less than 1 Hour

        sounds like pure muscle

        my 5.0 sounds like pure muscle now after this exhaust system. magnaflows sound is very deep and smooth. there is no drone in this exhaust system at all! at WOT this exhaust sounds vicious!

        Helpful (7)
      • April 27, 2012

        5 2012 GT - Drake93 Installation Time: Less than 1 Hour

        Mean Sounding Exhaust!!!

        It was a little hard getting off the old mufflers, but once they were off the new ones popped on in no time. The magnaflows are perfect for what I was looking for. They aren't ridiculously loud and they definetly aren't quiet. Just cruising around my car sounds a lot meaner now. The tone is much deeper then the stock ones and it sounds great. No drone what-so-ever! The 4" inch tips look a lot better as well. The only complaint I have is that when they came they had been sprayed with packing foam and most of it ended up going up to tip into the muffler, other than that i have no complaint with AM. Came in the mail very fast! Overall perfect for what I was looking for.

        Helpful (8)

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