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

Market Price $1,644.75 You Save 32% ($523.33)
Our Price

$1,121.42

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  • Item 389031
  • MPN# 19101

In Stock Ships same business day. Choose options to add to cart

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.

Note: Coupon codes cannot be applied to this product.

Fitment: 2015 2016 2017 Details

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?
  • GT - 15, 16, 17

Fits both Fastback and Convertible models

People Who Bought This Item Also Bought

Most Helpful Reviews

5/5
Makes a Mustang sound great

UPS dropped the box several times and warped the ends of the connectors. System looks and sounds great. It tends to be very loud inside at highway speeds. Not for the faint of heart. It definitely growls ...

Read More
Helpful (3)

5/5
Incredible Sound

To my pleasure this exhaust is everything that I wanted my Mustang to sound like. It has that deep sound that no other system can match. I'll be honest the first couple hundred miles were a little too ...

Read More
Helpful (2)

Overall Rating 4.9 out of 5 stars
Read All 39 Reviews

Customer Photos (11) Submit Your Photo

View All 11 Photos

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7 Questions / 5 Answers

Ask a Question

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

vettekiller

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

    Chris J

Helpful (1)

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

EB2015

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.

Anonymous

  • Unfortunately, we do not just sell the Competition muffler. You can get the Magnaflow Competition Axle-Back Exhaust (15-17 GT), item # 389032, (http://www.americanmuscle.com/magnaflow-competition-axleback-15gt.html). This axle-back will include the competition mufflers.

    AshleyK

Helpful (0)

what happens if i put this on a v6 2016 ford mustang ?

Anonymous

  • This cat-back will not be a direct fit on a 2016 V6 Mustang. This exhaust system is only designed for 15-17 GT Mustangs.

    AshleyK

Helpful (0)

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.

Joker

  • Hi, This cat-back is a direct bolt on and will bolt straight up to the factory Mid-Pipe without any extra modifications required on the 2015-2017 GT Mustang.

    Chris J

Helpful (0)

What kinda of MPG can I expect with moderate driving and with spirited driving?

S550Junkie

  • With the Magnaflow Competition Cat-Back Exhaust you will not be noticing any difference in gas mileage after installation.

    SalC7

Helpful (0)

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Customer Reviews (39) Write a Review

Overall Rating 4.9

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Loudness / Volume 4.666667 4.7
  • Exhaust Note 4.75 4.8
  • Fit & Finish 4.833333 4.8
  • Bang For Your Buck 4.861111 4.9



  • 5/5

    Installation Time: Afternoon

    October 26, 2016

    Makes a Mustang sound great

    UPS dropped the box several times and warped the ends of the connectors. System looks and sounds great. It tends to be very loud inside at highway speeds. Not for the faint of heart. It definitely growls and makes my Mustang stand out. This is really a 2017 Mustang GT, but the choices only went to 2016. Took some cutting and fitting, but is worth the effort. My wife says it is too loud, but it is my car...LOL

    SR

    Year: 2016 Submodel: GT

    Helpful (3)

  • 5/5

    July 22, 2016

    Incredible Sound

    To my pleasure this exhaust is everything that I wanted my Mustang to sound like. It has that deep sound that no other system can match. I'll be honest the first couple hundred miles were a little too loud in the cabin, but now that I've had it on well over two weeks the system has settled in and it is back to normal. It does drone in the 1500-1600 rpm range/60mph but once you get passed that it's a beast. I have two buddies who will be switching from the Borla Attack to this MF system. If you want that small block cam engine sound this will be the right system for you.

    Chavo1130

    Year: 2016 Submodel: GT

    Helpful (2)

  • 5/5

    July 07, 2016

    Awesome Sound

    You will love the sounds of this exhaust. Every mustang I've owned has had a MagnaFlow Exhaust. All 4 Mistangs were different years and they never let me down.

    Snupe81

    Year: 2016 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    May 29, 2015

    Awesome

    This was one of the easiest installations ever.Every part fit perfectly and had the system installed in a 1/2 HR for start to finish. I do have a lift in my shop but still system was designed for ease of installation.This system wakes up the 5.0 ,sound is awesome and people pay attention when you drive by.

    Bert56

    Year: 2015 Submodel: GT Phoenix, AZ

    Helpful (2)

  • 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 (1)

  • 5/5

    Installation Time: Less than 1 Hour

    November 22, 2016

    Great value!

    Sound is exactly what I wanted, deep, rumbling, but not obnoxious.

    Trap

    Year: 2007 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    November 22, 2016

    Incredible Sound and Power

    Worth every penny spent! My 2015 Mustang GT sounds incredible and turns heads wherever I go. Power increase and gas mileage is a nice bonus also. 1 comment, its worth the extra effort to sleeve and weld the the x-pipe at the cats to remove the OEM connectors, they were allowing leaks in the exhaust.

    Ronaldgo

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    May 30, 2016

    Magnaflow competition

    I bought this awesome exhaust and definitely is amazing, sounds great i love this item my car definitely has the sound that it needs

    Carlorock

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    March 28, 2016

    Deep sounding awesomeness

    If you're looking for a deep exhaust note, look no further. This exhaust is deep and loud. Doesn't have the "canny" found on other exhausts, but rather a perfect growl. Installation was quick and easy. If you can get under the car you'll have this done in an hour or so. Video's of the sound do not do this justice. It's louder than what I was expecting from the videos, but again it sounds great. Only thing I will warn you of is the drone at low RPMs while on the freeway in the top gear. Drone will be heard while idling between 1200 and 2000 RPM. Under throttle however and your car thunders to life, and it won't wake the neighbors while cruising through the neighborhood.

    GTCarter

    Year: 2015 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    February 15, 2016

    Very easy install

    Since the vehicle only had less than 200 miles on it the uninstall the old system was very easy , The new system was very easy Bolt up system love it

    Les

    Year: 2016 Submodel: GT Mi

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    September 20, 2015

    magnaflo competition cat back exhaust

    Received the package and couldn'the wait to see the system. Unpackaged the muffler and looked right through it. I thought, this will be loud. Had it installed two days later, and it sounded just about perfect. Nice rumble at idle, and a growl under throttle. Just what it needed, and so much better than stock. It does have a drone at low rpm, 1500 - 1600 rpm in 6th gear, about 60 mph, but otherwise sounds great. The install was quick, and the tips look great. I am very pleased with the system and would recommend to others wanting a seriously pleasing sound.

    Paul

    Year: 2015 Submodel: GT Minot, ND

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    September 18, 2015

    magnaflow comp exhaust 2015 gt

    This exhaust is great 1200 dollars was a lot for me to spend but I'm very pleased. the performance gain is there i had a light stumble at low rpms at first but after about 30 min of Driving it went away and after about two days your car as completely adjusted to it from the bottom to top end I did a cold air intake and this exhaust and this thing is a beast now for a 5.0 it definalty woke this motor up

    nate909

    tulsa.om

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    August 30, 2015

    Beast mode!

    I wanted a more aggressive sound to my stock GT. This product exceeded my expectations. I can't get enough of the exceptional sound quality produced. Wasn't sure my wife was going like, but I see a grin on her face every time she drives it. So much fun!

    Max

    Year: 2015 Submodel: GT Fredericksburg, VA

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    August 08, 2015

    Sounds awesome!!!!!

    This system looks and sounds amazing. I usually go with Borla on all my Mustangs, but this MF pipe sounded like a deeper tone on all of the You Tube videos....AND IT IS!!!!!!!!

    MustangGirl

    Year: 2015 Submodel: GT Lewisport, KY

    Helpful (1)

  • 5/5

    Installation Time: Afternoon

    June 03, 2015

    Unleash the beast

    I was looking for the deepest exhaust note, not necessarily the loudest. But I'm pretty sure I found both. Great sound, easy to install with a jack and jack stands in a garage or driveway. Looks awesome, fits really nice, the 4.5 in tips fill up the rear valence nicely. It does get a little loud in the cabin. Would definitely recommend this exhaust.

    S550x15

    Year: 2015 Submodel: GT San diego

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    May 29, 2015

    Love this exhaust!!!

    incredible product quality as always from manga flow.. I highly recommend this cat back if you are looking for that deep tone and amazing fitment

    sonic

    Year: 2015 Submodel: GT Wappingers Falls, NY

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    January 06, 2015

    Awesome Upgrade

    The sound is amazing! On top of that the power increase is there....you will notice it. The fuel mileage has increased two (2) miles per gallon as well. This product is exactly as advertised and worth the money. If you have a 2015 GT Mustang then you MUST get this exhaust. American Muscle has immediate shipping and everything arrived in perfect condition. The mechanic who installed it was very impressed with this system.

    Mike5754

    Year: 2015 Submodel: GT Virginia, USA

    Helpful (1)

  • 5/5

    Installation Time: Less than 1 Hour

    January 04, 2015

    magnaflow competition

    One of the best sounding exhaust for the 5.0 coyote. Quality is outstanding and installation was a breeze. Getting tips aligned properly by yourself might be the most difficult part. Sounds is loud enough to be a ticket getter

    mfrank

    Year: 2015 Submodel: GT

    Helpful (1)

  • 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 (0)

  • 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 (0)

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