Guaranteed Free Delivery by 12/24! available on most items - Details

Talk to a Mustang Enthusiast
1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $5,000 For Your Mustang! Enter Daily
Cyber Monday Prices Still Live Shop Now

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

Item 389031
Call a Mustang Enthusiast at 1-877-887-1105
M-F 8:30A-11P, Sat-Sun 8:30A-9P
$0.00
Market Price $1,370.50 You Save 12% ($157.67)
Our Price

$1,212.83

FREE Shipping

Will this fit your Vehicle?

Select a different vehicle Help?
Update or Change Vehicle
In Stock Ships same business day.
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    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

    MPN# 19101

    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-throughFitment:2015-2017 GT
    Will it fit my Mustang?

      Customer Photos (15) Submit Your Photo

      View All 15 Photos

        Questions & Answers (14)

        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 (6)

        I own the ecoboost version with the Ypipe. My question is can i just purchase an Xpipe that can just be swapped out to fit my ‘16 GT? If so can u recommend some?

        • No, sections of EcoBoost exhausts will not transfer directly to the GT platform with the addition of a y-pipe portion.

        Helpful (0)

        I bought a 2017 GT with this already on. Are there magna flow or other mufflers I can add to decrease the sound while not causing too much flow restriction?

        Thinking about going with the Magnaflow Competition catback for my 2016 GT convertible. I’m concerned about the drone but I figured with the convertible the drone should be a bit diminished. Wondering if my thinking is correct?

        • We would not be too concerned with drone when using this exhaust on your convertible. That will be an awesome set up!

        Helpful (0)

        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 ?

        • The Magnaflow Competition Cat-Back Exhaust will be compatible with your current exhaust setup.

        Helpful (0)
        Post Your Question
        9 More Questions
        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 1 answer
        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. 1 answer
        Will this exhaust fit my 2016 mustang gt convertible? 1 answer
        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

          Customer Reviews (53) Write a Review

          Overall Rating 4.9

          out of 5 stars

          Installation Time:Afternoon

          Installation Cost:$100-$250

          • Loudness / Volume 4.62 4.6
          • Exhaust Note 4.76 4.8
          • Fit & Finish 4.8 4.8
          • Bang For Your Buck 4.8 4.8



          • 5/5

            Installation Time: Afternoon

            July 14, 2019

            Unique Sound

            Love the Exhaust! Wish the drone wasn't so bad. Definitely takes some getting used to. Overall doesn't sound like all other mustangs. 1.5 install time. Having a lift is a life saver!

            BertH

            Year: 2015 Submodel: GT

            Helpful (0)

          • 5/5

            Installation Time: Afternoon

            January 13, 2019

            Magnaflow competition cat back

            Extremely impressed with the cat back. Its loud but doesnt scream like the corsa. Has a way deeper tone over factory. Its just phenomenal.

            TylerB

            Year: 2017 Submodel: GT

            Helpful (3)

          • 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 (5)

          • 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 (4)

          • 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 (8)

          • 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 (5)

          • 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 (8)

          • 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 (4)

          • 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 (5)

          • 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 (7)

          • 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 (4)

          • 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 (4)

          • 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 (5)

          • 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 (7)

          • 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 (4)

          • 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 (4)

          • 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 (5)

          • 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 (5)

          • 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 (6)

          • 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 (6)

          Related Mustang Categories