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Magnaflow Competition Series Axle-Back Exhaust (2010 GT, GT500)

Item 48034
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      Product Information

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


      • Aggressive V8 Sound
      • Durable, Stainless Steel Construction
      • 2.5" Mandrel-Bent Tubing
      • 3.5" Polished Stainless Steel Tips
      • Competition Mufflers
      • Fits 2010 GT and Shelby GT500 Mustangs


      Save Money. Do you want that deep aggressive muscle car sound for your 2010 V8 Mustang, but don't want to pay for a whole new catback exhaust? Look no further, as this Magnaflow Competition Axle-Back Exhaust System is just what you've been searching for to upgrade your 2010 GT or GT500 Mustang.

      Quality Construction. Constructed from 100% stainless steel for long life, the Magnaflow Competition Axle-Back Exhaust features (2) straight-through mufflers with 4" polished stainless steel tips. The tubing has been mandrel-bent to improve exhaust flow and to assure a perfect fit.

      Application. Made to be a direct bolt on, this Magnaflow Competition Axle-Back Exhaust System will bolt right up without any extra modifications required on the 2010 GT and Shelby GT500 Mustangs for a deep aggressive V8 sound.

      Note. Coupon codes cannot be applied to this product.

      Fitment: 2010

      Magnaflow 16574

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (9)

      Write a Review

      Ratings Summary

      4.9 out of 5 overall rating from 9 customers

      Installation Time: Full Day

      Installation Cost: $100-$250

      • October 26, 2019

        5 2010 GT - Denis Installation Time: Less than 1 Hour

        Perfect balance of deep tone and WOT bark

        I combined this with a BBK high flow catted X-pipe. Prior to these mufflers, I had magnaflow street series muffler. Too quiet for my taste (barely louder than stock). I switched to these Competition Series and I am super happy. No drone at any speed, quiet enough that your neighbors will not complain or if you are easy on the fast pedal. When you want them to bark, pin the throttle and they alert everyone! Great sound and balance of volume when you want it.

        Helpful (0)
      • December 19, 2016

        5 2010 GT - RipNRiva Installation Time: Shop Install Installation Cost: $100-$250

        Awesome Sound!

        I just had these installed today and they sound amazing, i talked to the mechanic who is very professional and he said he had a hard time fitting these 2010 magna flow axle back on. other than that it took about an hour and change and I was off! they are perfect for what i was looking for. I have a 2010Gt track pack edition car with: a CandL Intake Ford racing throttle body Fordracing intake manifold Ford racing Camshafts Kooks long tube headers Kooks offroad x pipe Stock mufflers/ Replaced by Magnaflow Comp exhaust The new sound is way more aggressive and deep, when traveling through town its not to loud when idling or light driving and on the highway there is no droning sound, once you hit the gas and get past 3000rpm this thing is freaking awesome loud! the only problem i having is a slight grumbling underneath my feet in the car due to what i think is the back pressure when at idle due to the loopy camshaft timing. id give it a 9/10 a 9 due to hard installation fitting.

        Helpful (9)
      • January 09, 2011

        5 2010 - justin b

        2010 magnapack axle back

        excellent product, highly polished tips and mufflers. install was super simple, just one hard to get to bole on top of the muffler its self. much deeper sounding than stock and a little louder. i have frpp x-pipe installed and there is no drone with this set up!

        Helpful (11)
      • April 20, 2010

        5 2010 GT - Garrett

        2010 Mustang GT Magnapacks

        So I ordered the exhaust late Thursday night. The package arrived around noon on Tuesday. I just had it installed today for exactly $55 dollars. The shop said that it was the easiest aftermarket exhaust they had ever installed. But they did have some complications on the left exhaust-but easily fixed it. It only took one hour to install. Upon startup, I absolutely loved them. They make my mustang sound really aggressive. I would suggest any mustang owner to get a pair of these. Hell, it should be mandatory! If you want your car to sound deep and extremely aggressive I recommend this exhaust. Side Notes: Like other reviews, the exhaust didn't have a black outlined "Magnaflow" text on them, Its only etched in. Sound: Like other reviews, they aren't very loud at idle, but they do sound a lot deeper. But when you step on it, people will definitely hear you.

        Helpful (10)
      • April 04, 2010

        5 2010 GT - Gary

        Magnapacks 2010 GT

        Ordered on Tue./Arrived on Thur./Installed om Fri Nice deep sound

        Helpful (9)
      • March 25, 2010

        5 2010 GT - Dave

        The sound of these Magnapacks

        To anyone wondering how loud the sound is on these,I would say they are not much louder than stock unless you push the pedal down a lot. For normal driving, sounds almost the same as stock. If you want something that is louder than stock at all speeds and driving styles, go with a muffler delete like the Pype Bomb. But make sure if you have a 2010 GT you get mufflers that have a specially long tip or tips or will melt the plastic.

        Helpful (15)
      • March 24, 2010

        4 2010 GT - Rob

        Magnapacks on 2010 Mustang GT

        Just installed these today. Took a lot longer than I expected, but it's done. Let me start by saying there is no black "Magnaflow" outlined wording on these, unlike the official photo. They do say Magnaflow, but they are just etched and you need to be close to see it. Now for the installation... I did this myself in the driveway, witht the rear tires up on ramps. Plenty of room to work. The instructions said to just loosen the pipe clamp on the back of the factory muffler and pull it off. I found that was impossible and had to take off (unbolt) all the factory hangars. My first real problem came when I got the first Magnapack loosely fitted. It was too high, touching the top of the plastic fascia. So I had to take it all apart and bend one of the muffler hangars up and then put it all back together. Then, when I had it all good and was tightening the clamp bolt, I discovered that it was as tight as possible but the pipe was still loose! Must be a bad clamp... I called Magnaflow and asked for a new pair overnighted. They would only send one and it would come ground! Like hell I am going to wait for that... I took it apart again and installed the other clamp, put it back together, and then it tightend up fine. Ok, one down.. I took some parts from one of the factory clamps and used it to fix the bad magnaflow clamp. I then installed the other oem muffler. At first I thought something was totally screwed up when it seemed WAY off and impossible to connect correctly, but it turns out the exhaust hangars on that side can install multiple ways and I just had them wrong. Fixed that, and then noticed this muffler was also too high and had to take it apart and bend that musffler hanger too. Finally got it all together and tight, and it looked pretty good. It's importanrt to note that any muffler for sale on American Muscle that says it is for "05-10 GT" will not fit correctly on a 2010! The 2010 model fascia is 1" longer than previous years. If you put on mufflers that are designed for a 2005-2009, it will be too short and will eventually melt the plastic. Plus it won't look as good as mufflers espically sized for a 2010, like the 16574 Magnapacks I am reviewing here. These look great. They stick out just as far as the OEM's do, if not a little farther. They also appear to be slightly larger diameter than OEM, and have a thicker appearing, tapered inner sidewall. These mufflers are straight through design, like cherry bomb glasspacks. They give the car a deeper, richer tone. When idling, they are slightly louder and deeper sounding than stock. When taking off with a light foot, they are a little louder (and much deeper) than stock. When taking off hard or accelerating hard, they are definately much louder than stock. When full throttle, you notice the most difference. When installing these, I noticed that the stock muffler-to-Hpipe pipes were extremely cheaply made. One of them looked liked the factory struggled to fit it in and is almost s-shaped when it should be straight! And both of them, where they are bent to go over the rear end and sway bars, are bent in a way that the inner diameter is severly squeezed, almost to half the diameter they should be (2-1/2"). After seeing that, I wished I had waited until I could afford the full Magnapack set that includes the SS pipes... I am hoping that I can find just the pipes somewhere in the future, as they don't seem to offer just the pipes for people that bought only the mufflers previously. Well overall, I am happy I have these now. I wanted something louder and deeper than stock, but not so loud as to draw a lot of attention (unless I want it). These seem to be the ones. The next step up from these are high flow cats, x-pipe, and x-pipe to muffler pipes, or else doing a muffler delete set. I think the muffler deletes would be too loud so I will stick with these Magnapacks and possible upgrades as mentioned. I hope you guys find this review helpful, I cetainly enjoyed the info I read in reviews when researching a new exhaust, and I wanted to give back..

        Helpful (26)
      • March 18, 2010

        5 - simon


        sound pretty cool and no drone at all,easy installation recommend

        Helpful (7)
      • October 04, 2009

        5 2010 GT - Martin

        2010 GT Magnapack

        Quality product. Install was easy. Kit fit nicely. Sounds solid. Louder than stock setup but not overbearing. No drone at any speed or any rpm what so ever. Quite when just cruising but really comes to life when you step on it. If youre looking for a smooth, deep, quality sounding growl from your GT this setup should do the trick. However, if you're looking for that really really loud sound you may want to look into a kit that does with out the mufflers all together. I personally thought these were going to be a little louder than they are but have grown to appreciate the deep quality of the sound they do produce.

        Helpful (12)

      Questions & Answers (2 answers)

      2 Top Rated Questions

      Hello I just had these installed on my mustang gt 2010, and i wanted to ask if anyone else was having a grumbling grinding sound when idling after stopping the car. I haven't had this problem until i installed these taking off the factory mufflers. I can kind of feel it under my feet by the petals and transmission. Is it from the back flow from the engine? I do have the ford racing camshafts in and long tube headers and off road x pipe. can anyone take a guess. It almost sounds like grinding gears but i feel it below the car. its not super sound but it does it a couple times after coming to a stop when i put the car in neutral.

      • Hey there! Sorry to hear that you are having an issue with your exhaust, to better assist you please call us or email us so we can solve this for you!

      Helpful (0)

      fitment for 2012 gt wana ask if its possible to fit this axle back on my 2012 gt. how and whats the complements needed to fitted properly?

      • This is a 2010 specific axle-back and will not work properly on your 2012. I highly encourage you to take a look at the exhaust systems available that are built for your year/model to ensure the perfect fit and proper tone!

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Axle-Back Assemblies
      • (2) Band Clamps

      Tech Specs

      Axle-Back Exhaust Specifications
      Piping Material:Stainless Steel Tip Material :Polished Stainless Steel
      Piping Size:2.5"Tip Size:3.5"
      Muffler Type:Straight-throughFitment:2010 GT, GT500

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