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Magnaflow Competition Cat-Back Exhaust (15-17 GT)

Market Price $1,305.23 You Save 12% ($150.16)
Our Price

$1,155.07

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  • Item 389031
  • MPN# 19101

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    Features, Video & Details

    • Aggressive Muscle Car Sound
    • Stainless Steel Construction
    • 3" Mandrel-Bent Tubing
    • 4.5" Polished Stainless Tips
    • Fits All 2015-2017 GT Mustangs, Including Fastback and Convertible

    Review & Installation Video

    Review & Install Video

    Hey, everybody. Justin with AmericanMuscle.com, here with my complete breakdown of the Magnaflow Competition Series Catback Exhaust System fitting your 2015 Coyote powered GT. Magnaflow has definitely made a name for themselves over the past 30 or so years, as one of the best in the biz, thanks largely in part to their quality build, great sound and perfect fitment. The Competition Catback from Magnaflow will no doubt be one of the more aggressive systems available for your Coyote Powered GT, and will certainly be much more aggressive when compared to the Magnaflow Street Catback. The main difference in sound is simple; it's in the muffler here. This is a straight-through design which will not only free up a lot of power, but also give you that very tough sound a lot of us Mustang owners are after. Getting into some of the specifics, you will notice the competition includes 3-inch mandrel bent tubing from the included crossover, or X pipe, which does take the place of that factory suitcase portion of your exhaust, along with these straight-through competition mufflers and out the brightly polished, rather large, four-and-a-half inch tips. I do want to point out that this entire kit has been constructed from 100% quality stainless steel. So besides looking good for years to come, you're also going to save a few pounds when compared to your factory, rather hefty, exhaust there. Now guys, if you do want to see more detailed photos of this exhaust including some customer reviews, then just click on the link below to head back to the product page, if you're not already there. Since the 2015s are equipped with IRS, removing the old exhaust and bolting up the new Catback should be a lot easier than previous generations, thanks largely in part that you don't have to deal with those over-axle pipes. With that being said, removing that factory exhaust and installing the new Competition here from Magnaflow, should only take you about two hours using basic hand tools. Now it's time to hear how the Magnaflow Competition Catback sounds compared to our factory exhaust.

    Add Horsepower. Stop choking off your high powered 5.0L V8 with a factory exhaust system and enjoy more horsepower with a Magnaflow Competition Cat-Back. By reducing back pressure and giving your GT Mustang a free-flowing exhaust, you'll see great power and torque gains.

    Aggressive Muscle Car Sound. Give your coyote powered 2015-2017 GT Fastback the deep, aggressive rumble it deserves with a Magnaflow Competition Cat-Back. This premium quality exhaust features free-flowing, straight-through mufflers that increase power and give your GT an unmistakable muscle car sound.

    Magnaflow Quality. Constructed from durable 3" diameter mandrel bent stainless steel tubing for it's corrosion resistant properties, this Magnaflow Cat-Back features two straight-through mufflers with brightly polished 4.5" stainless tips, that exit in the stock locations for impressive muscle car looks and sound.

    Application. Made to be a direct bolt on, this Magnaflow Competition Cat-Back Exhaust will bolt straight up to the factory Mid-Pipe without any extra modifications required on the 2015-2017 GT Mustang to give it the deepest, most aggressive sound possible. This Magnaflow Competition Cat-Back Exhaust fits both the fastback and convertible models.

    Technical Notes. AmericanMuscle recommends professional installation of all body parts. We also recommended test fitting these products before they are painted.

    Freight Notes. Freight items can only be shipped within the continental 48 states, no expedited methods. What is freight shipping? Your Answers are Right Here!.

    Fitment: 2015 2016 2017 Details

    CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

    What's in the Box
    • (1) Right muffler assembly
    • (1) Left muffler assembly
    • (1) Right tailpipe assembly
    • (1) Left tailpipe assembly
    • (4) clamps
    Installation Info
    Tech Specs
    Cat-Back Exhaust Specifications
    Piping Material: Stainless Steel Tip Material : Polished Stainless Steel
    Piping Size: 3" Tip Size: 4.5"
    Muffler Type: Straight-through Fitment: 2015-2017 GT
    Will it fit my Mustang?

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    Questions & Answers (11)

    5 Top Rated Questions

    how much horsepower will it add to my 2015 mustang 5.0 gt

    • Hi, This Magnaflow Competition Cat-Back Exhaust by its self will at most add 1-3 HP.

    Helpful (3)

    will this system bolt up to a 3 inch catless bbk mid pipe in to long tubes I have a corsa catback on it going into long tubes currently . wondering if I will need to do any cutting or welding ?

    Are they any difference with this setup compared to the RTR competition setup? I know both are made by MagnaFlow but curious about the difference on the sound. TIA

    • The RTR Performance competition is using a different style of muffler compared to the Magnaflow mode. The Magnaflow using a more bullet straight through style for a higher note, compared to the RTR.

    Helpful (0)

    How much louder is the competition compared to the Magnaflow Street? I really wanna have a deep sporty sound but I don't want to wake up my neighbours every time I get home. Some youtube comments said "Nice exhaust which is not too loud when idle", but I can't really tell what that means. Can you maybe somehow tell me the min/max between stock exhaust/Magnaflow Street cat-back/Magnaflow Competition cat-back? I hope I don't ask for too much :D.

    • The Magnaflow Competition Cat-Back Exhaust utilizes straight through mufflers for minimal restriction, which will make this exhaust one of the louder offerings we have.

    Helpful (0)

    Will this exhaust fit my 2016 mustang gt convertible?

    • The Magnaflow Competition Cat-Back Exhaust will fit a 2016 Mustang GT Convertible without any issues.

    Helpful (0)
    Post Your Question
    6 More Questions
    I have the maganaflow street catback and I was wondering how much more drone the competition gets compared to the street version? I'm thinking about upgrading to the competition axle-backs 1 answer
    I purchased and installed the street series cat back system on my 15 gt and was wondering if I would be able to purchase just the competition muffler to switch out with the street, without buying the complete system. 1 answer
    what happens if i put this on a v6 2016 ford mustang ? 1 answer
    I saw a review down in the comments that said he had to do some cutting? So is there cutting required on this? I didn't think there was but I want to be sure. 1 answer
    What kinda of MPG can I expect with moderate driving and with spirited driving? 1 answer
    What headers/long tube systems will pair well with this? 1 answer

    People Who Bought This Item Also Bought

    Customer Reviews (51) Write a Review

    Overall Rating 4.9

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$100-$250

    • Loudness / Volume 4.625 4.6
    • Exhaust Note 4.770833 4.8
    • Fit & Finish 4.791667 4.8
    • Bang For Your Buck 4.791667 4.8



    • 5/5

      September 02, 2018

      Beauty is a Beast

      An aggressive rumble announces your arrival and departure...others know it's all business

      WayneE

      Year: 2015 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      July 29, 2018

      Great Muscle Car Sound

      Wonderful product; Great quality and awesome sound; Really what a 5.0 needs to sound alive!!

      MustangFan

      Year: 2015 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      July 02, 2018

      Great sound

      Was nervous this system would be too loud for a daily driver but wanted a deep full sound. This system delivers there are moments where it gets loud inside but it’s never too much to enjoy. Would highly recommend this exhaust if you’re looking for a deep sound and rare moments of rasp.

      ErikD

      Year: 2017 Submodel: GT

      Helpful (6)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      June 25, 2018

      Just Bitchin

      I was on the fence when it came to choosing an exhaust for my '17 GT PP. It ultimately came down to Magnaflow Competition cat back or Borla Attak...I went with the Magnaflow. I couldn't be any happier, I chose MF because of the reviews. Reviewers stated it was a classic low rumble, while Borla was a screamer. My wife was a screamer, she made me crazy. Anyway, yes there is the drone at 1900 rpm. But you know what??? I don't care (it really isn't that bad, in fact I love it), it just assures me that that bad Coyote sitting under the hood has just been uncorked...Just the tip of the iceberg here, great plans in store for my sexy beast. I did not buy my exhaust from AM, however the rest of my dream list will come from them. This exhaust did not disappoint, and I honestly feel that I made the right decision, and I would do it again.

      RickA

      Year: 2017 Submodel: GT

      Helpful (3)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      March 31, 2018

      Incredible Sound...horrible drone

      The sound that this cat-back produces is absolutely incredible. It's a deep throaty rumble that never gets too raspy. In my opinion, this is the best sounding cat-back available for the S550. However, at lower RPM's, the intense drone is almost unbearable. After 3 days, I developed horrible ear pain and had to replace the factory resonator but left the axle-back portion. Fortunately, the deep rumble that makes this exhaust sound so good stays relatively intact with just the axle-back, but with a much more subdued cabin drone. If you intend to use this as a daily driver, I would strongly consider looking into the axle-back option.

      Brady

      Year: 2016 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      March 27, 2018

      Awesome sound

      Very easy to in stall I had put the car up on Jackstands undid 6 bolts from the stock exhaust and took off the exhaust. Putting the new exhaust on was an ease by filling the YouTube video. Love the way my car sounds only thing I don't like is there is a drone at certain rpms but I just turn up the radio and all. Is good

      DennisO

      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      March 15, 2018

      Magnaflow comp car-back

      I did as much research as I possibly could. While better cat-back systems are out there. Such as the Corsa Extreme and some of the Borla systems. I went with what I wanted my car to sound like. The Magnaflow had the deep aggressive sound I wanted my S550 to sound like. I have no issues with drone and I use the interstate everyday. I also have a 6 speed so that helps. So my advice go with whatever sound or system you want for you car. I have zero complaints.

      Kevin

      Year: 2017 Submodel: GT

      Helpful (4)

    • 4/5

      Installation Time: Afternoon

      January 24, 2018

      Thunder Struck

      It sounds awesome. Looks awesome. Or it will the only reason I gave 4 out of 5, is the left muffler will not line up even in the rear valance. I am working with AM. Now. But even with the ever so slight bend in the left muffler it still is a great set up.

      KellyM

      Year: 2017 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      December 09, 2017

      Amazing

      This cat back system was everything I had hoped for great quality great fit and perfect sound I had it installed by my Ford dealer they did an excellent job for around $150

      SteveJ

      Year: 2016 Submodel: GT

      Helpful (3)

    • 4/5

      Installation Time: Less than 1 Hour

      November 07, 2017

      Magnaflow

      Personally prefer the outlaw to the competition but still sounds great. Deeper sound with less tone than the other. I would attribute this to the 3” piping.

      njblake94

      Year: 2015 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Afternoon

      October 31, 2017

      MagnaFlow comp. cat-back

      Sounds amazing. The video on here doesn’t compare to it in person. Beast!

      Vincent

      Year: 2016 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      October 23, 2017

      Pipes for the Stang

      Decided on the Magnaflow Competition Cat-Back Exhaust for My 2015 GT Love the deep sound Theneighbors know when I come and go. The Exhaust was very easy to install I am no mechanic and had no problem at all.

      BradW

      Year: 2015 Submodel: GT

      Helpful (6)

    • 5/5

      Installation Time: Less than 1 Hour

      September 27, 2017

      amazing

      sounds amazing looks amazing and very easy to install.

      Matt

      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      September 26, 2017

      LOUD but extremely satisfied

      I bought this exhaust and had it installed in less than an hour. Hardest part was just taking off the old exhaust. It vibrates inside the cabin and creates a deep growl when stepping on the gas. When coasting without any gas it is quiet but that's pretty much the only time you dont hear it. Still getting used to how loud it is and for now i keep the windows down. Great buy.

      DanaF

      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Less than 1 Hour

      August 16, 2017

      Magnaflow

      Had the botla ataks with kooks catless headers and it wad obnoxiously loud. Mated it with magnaflow and it sounds like a true classic muscle car

      Rubystang

      Year: 2017 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      July 12, 2017

      2017 gt premium magnaflow Comp

      Love it! Great deep sounds highly recommended! Little bit of drone under light acceleration but nothing to complain about

      Dominic

      Year: 2017 Submodel: GT

      Helpful (4)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      May 20, 2017

      Not to bad

      Very easy install has long as you have lift. The volume is loud and the exhaust tone sounds good for the most part. If you run around 2000 rpm's there is a terrible drone that will kill you ears.

      NickE

      Year: 2017 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Afternoon

      May 12, 2017

      Looks great, sounds even better!

      Relatively easy install. A little clarification on which way the xpipe goes on would be nice in the instructions and in online videos, as one side of the xpipe is a little longer than the other. Once you figure that out, it lines up perfectly. Sounds absolutely amazing, no video does it justice. Definitely turns heads, and has a really deep tone. And yes it does drone at about 60 mph, or 1500-1800 rpm, but I don't really mind. The tips look amazing as well. I highly recommend this product.

      Barry

      Year: 2017 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      May 12, 2017

      Love my 2017 GT's new growl !

      Had my new Magnaflow Competition Cat-Back exhaust installed this Tuesday and it's better than I expected. Deep throaty growl that turns heads when driving down the street. My wife hates it so you know it must sound good ! Looks and sounds great.

      EdwardR

      Year: 2017 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      February 12, 2017

      Magna flow competitions are great

      I love my magna flow cat backs they are loud and deep! They have that great retro American muscle car sound. Easy install and turns heads. The exaust tips are huge (4.5 inch chrome)and it makes my S550 5.0 mustang look and sound like the beast it really is.

      EudeO

      Year: 2015 Submodel: GT

      Helpful (5)

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