MagnaFlow Cat-Back Exhaust Kit Competition Series 3" Stainless Steel GT 2015-2017

MagnaFlow Cat-Back Exhaust Kit Competition Series 3" Stainless Steel GT 2015-2017 is rated 4.6 out of 5 by 17.
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  • Dyno Proven Increases
  • 3" Competition Series Cat Back
  • Dual 4.5" Polished Tips
  • Race Inspired Exhaust Note
MSRP $1,778.81
You save 32%

MagnaFlow Stainless Steel 3" Competition Series Cat-Back Exhaust Kit for all 2015, 2016 and 2017 GT Mustangs.

The stock exhaust system on your 2015-2017 GT Mustang works well, and it even gives you a nice muscle car roar. But when you really want the best in performance, efficiency, and volume, the MagnaFlow stainless steel cat-back exhaust system delivers what you want and then some.

This MagnaFlow exhaust system includes bolt-on parts that use the same mounting points and brackets as your stock exhaust, which makes it a breeze to install. And because it’s loud, it’s also a great way to show off the V8 that you have under the hood! Looking for a way to make your 2015-2017 GT Mustang sound as fast as it really is? This Stainless Steel 3" Competition Series Cat-Back Exhaust Kit from MagnaFlow is going to provide the aggressive, head-turning roar that you're looking for.

MagnaFlow Cat-Back Exhaust: Loud, Powerful, Easy to Install

This MagnaFlow cat-back exhaust system uses a free-flow X-pipe mid-section to safely siphon exhaust away from the engine while delivering a deep, satisfying roar. The 3” pipe sections offer a lot of space for your exhaust to flow, giving your pony car better performance and a sleek, efficient system to match. The end tips cap off your exhaust system with a smart, sleek, and modern appearance as well.

The MagnaFlow cat-back system comes with three durable and reliable pieces that you can quickly install on your pony car. The pipe sections slide on to stock hangers and sleeves easily.

Features and Benefits:
- Made From 3" Stainless Steel Mandrel Bent Tubing
- Dyno Tested and Proven to Increase both Horsepower and Torque
- 4-1/2" Polished Stainless Steel Tips
- 5" Round Competition-Style Mufflers
- Aggressive Race-Inspired Exhaust Note
- All Welded Construction and Built To Last
- Easy To Install

This MagnaFlow Stainless Steel 3" Competition Series Cat-Back Exhaust Kit is sure to transform your Mustang's exhaust note into the thunderous sound it’s meant to have. With maximum performance in mind, MagnaFlow designed this Cat-Back Exhaust Kit for reduced mass to get your Mustang down the dragstrip that much faster. And with the prestigious MagnaFlow name, you know these parts are built to last with all mandrel bent tubing and precise fitment around the brand new 2015-2017 Mustang’s independent rear suspension.

This system is a complete kit, including all the necessary mounting hardware for installation. This MagnaFlow kit mounts in all of the factory exhaust mounting locations and exits through the rear valence. The 4-1/2" polished stainless steel tips also fill up the exhaust cutouts much better than the stock muffler tips. The Competition Series Mufflers included with this kit provide a race-inspired sound that will be sure to turn heads whether you're cruising down the highway or getting ready to make a shakedown pass at your local dragstrip.

MagnaFlow has been making aftermarket exhausts for Mustangs for decades, and this system is simply one of their best. Plus, at such great prices, you can be sure you’re getting a great deal on your Mustang’s new exhaust when you shop here. We can even ship most orders on the day you place them for free too, just to make sure you can get the products you need without emptying your wallet!

Order a MagnaFlow Stainless Steel 3" Competition Series Cat-Back Exhaust Kit for your 2015-2017 GT Mustang from CJ Pony Parts today!

Installation Difficulty


Novice skill is required for this installation.

Installation Videos

Vehicle Fitment

This product will fit the following Mustang years:

Rated 1 out of 5 by from Great build quality, but drones like crazy Installed on Friday, went back to stock on Monday. On the car 2.5 days, less than 20 miles. This is absolute worst droning system on the market (may not be, but I can't imagine one worse). Make sure you have Advil in the car for the headaches you will have. The frustration is that this is 2015...drone should be a thing of the past, it can and is engineered out of some systems. I call this engineering negligence on behalf of Magnaflow. If you have a 6 speed, the drone can be managed with downshifting/up shifting to stay away from the 1900-2200 rpm range...but those of you with automatics...your family won't ride with you, your neighbors will hate you and you'll look and sound like a clown driving an otherwise awesome car. My 2 cents.
Date published: 2015-10-13
Rated 5 out of 5 by from BEST OLD SCHOOL SOUND EVER The video does not make justice to this exhaust set up. Personally it sounds much better in person. It gives my 2015 GT the old school sound, loud enough but not exaggerated. Deep, beautiful, wonderful and even romantic (it reminds me my teenage years) mellow sound. No raspiness at all. It gives a strong sound in low rpms, which I love. However, when you push it, the sound is strong but not exaggerated, like when you push the borla attack (my former set up). It does have a drone on cruising rpms, between 1900 to 2000 rpms, and I love it. I like to feel the engine when I'm driving on cruise speeds and when I am changing gears. You do loose a little of torque with this set up but you do get more horse power, what is expectable since it is a straight through exhaust, and you get rid of the resonator. I only noticed it, I had never had it measured. Overall I couldn't be happier, maybe if it were a little louder on high rpms, but it is what it is, just its own characteristics.
Date published: 2015-02-13
Rated 5 out of 5 by from Incredible Sound Only had this exhaust on for a couple of weeks but they sound awesome! I've received multiple compliments in such a short period of time. The drone around 2k rpm that is often mentioned with this exhaust has been a non issue for me. It should be noted that my car is a manual transmission though. Install was fairly simple but not quite as easy as the CJ video makes it look. I had to unbolt one of the hangers from the car at the rear bumper on the driver's side then re-attach to get everything to fit into place. I'm no mechanic by any means but was still able to complete everything in less than 2 hours.
Date published: 2017-01-25
Rated 3 out of 5 by from Loud and Aggressive This is a quality product is excellent as you would expect but the sound clips do it too much justice in that it is much louder than expected, especially when cruising under load at low RPM. It drones very badly, so much so that it makes the door panel rattle. Great under throttle, but just not tolerable for cruising up a slight hill.
Date published: 2015-01-24
Rated 4 out of 5 by from Deep Rumble Okay so the part is awesome and install was only 40 minutes with a lift. It was actually a really easy install and I couldn't be happier with the install. The exhaust is really loud and deep. The rumble is awesome. I must say that the sound is a bit too loud for my neighbors and borderline for me. Drone is there at the 2k mark and it's rough. I still love it although I plan to add resonators to kill the drone. This is the deepest system I have heard and after going to cars and coffee last year nothing comes close in deepness.
Date published: 2016-02-21
Rated 5 out of 5 by from Throaty! Very easy install on my GT w/PP. Good quality kit. The exterior sound clips from CJ are pretty accurate. Deep mellow rumble below 2K both inside the car and out. If driven below 2K in 6th and lugging it there is significant drone, I don't mind it however I can understand how it might drive some people nuts. Can always downshift to 5th!
Date published: 2015-04-09
Rated 5 out of 5 by from Great sound! I have been researching different exhaust systems and after looking at several different aftermarket systems I decided to go with the Magnaflow competition series. The CJ Pony parts video was really helpful and made installation super easy. For the price, it was by far the best value!
Date published: 2016-12-28
Rated 5 out of 5 by from Just as a real muscle car should sound... Yes, it is loud and aggressive, but isn't is suppose to be? I like it. It's what it should sound like. If you don't like a drone, if you don't like loud and aggressive, then it's not for you. I want something load enough to turn heads and this is it.
Date published: 2015-01-29
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Any idea if the MBRP H pipe will fit this exhaust?

Asked by: Marchenko
It would not be a direct fit, it would need modification.
Answered by: rk cjpp
Date published: 2018-04-23

Hello, Good Morning do you have the same exhaust but with the black or carbon fiber tips. Thanks!!!

Asked by: Santana326
Santana, Magnaflow part# 19254 is a black coated version of part# 19101.
Answered by: Magnaflow
Date published: 2017-07-19

Hi, I'm looking for exhaust cutout to control the exhaust sounds tune. 

Asked by: Abie
We do not offer cutouts but we do offer P/N: M5220M8
Answered by: CJPP Dave
Date published: 2017-06-01

Hi I looking for your exhaust to my 2016 Mustang GT Ford but I live in France and my question is how much is it to export it for Thank you André SEI

Asked by: Fausto43
To get a shipping quote and total price, add the item(s) to your shopping cart and then proceed to checkout. In checkout, fill out your address info and scroll down to see shipping options and costs to your area including any import taxes and duties.
Answered by: CJPP Dave
Date published: 2017-04-10

I see it works with the 2016 Convertible, but does that require me to remove the factory bracing?

Asked by: Bigfoot210
Answered by: CJPP Dave
Date published: 2016-09-16

Can I get black high gloss exhaust tips

Asked by: Eviltrainer
This is not available with black tips.
Answered by: rk cjpp
Date published: 2016-09-01

Can I get black exhaust tips instead of polished on this set up

Asked by: Eviltrainer530
A black tip version is not available.
Answered by: rk cjpp
Date published: 2016-08-26

I have a 2015 GT  I like the sound of the Magnaflow competition 3 inch exhaust. Will the 3 inch pipe make me lose low end torque?

Asked by: gym rat
No, we have NOT heard of any situations where customers have felt or seen a loss in low end torque.
Answered by: CJPP Dave
Date published: 2016-03-04
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