Free Shipping On Orders Over $49. Details

Talk to a Mustang Expert
Mon - Sun, 8:30 AM EST - 11:00 PM EST
Win 1 of 2 $15,000 Mustang Builds! Enter To Win!

Gibson Cat-Back Exhaust w/ X-Pipe - Stainless Tips (15-17 GT Fastback)

AmericanMuscle no longer carries the Gibson Cat-Back Exhaust w/ X-Pipe - Stainless Tips (15-17 GT Fastback). Please check out 2015-2018 Mustang Cat-Back Exhaust for an updated selection.
This item currently can not be added to your cart. Please try again later.

Local Install Shops

Quoted installation from $125

View 3 Shops

near 19355 (change)

Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
Choose options to add to cart.

AmericanMuscle no longer carries the Gibson Cat-Back Exhaust w/ X-Pipe - Stainless Tips (15-17 GT Fastback). Please check out 2015-2018 Mustang Cat-Back Exhaust for an updated selection.

Features, Video & Details

  • Aggressive Muscle Car Sound
  • Power Gains of 32 HP and 34 ft-lbs Torque
  • CFT SuperFlow Mufflers
  • X-Pipe Included
  • 3" Mandrel-Bent Stainless Steel Tubing
  • 4.5" Polished Stainless Steel Slash Cut Intercooled Tips
  • Direct Bolt-On Design
  • Lifetime Limited Warranty
  • Made in the USA
  • Fits 2015-2017 GT Fastback Mustangs

Review & Installation Video

Review & Install Video

What's up, guys? Stephanie with and this is my review of the Gibson Catback Exhaust with X-Pipe fitting your 2015 and up Fastback GT Mustang. This catback from Gibson is going to be for the S550 GT owners out there that are looking for a three-inch, budget-friendly, x-pipe catback system that's not going to be too rowdy or have the neighbors complaining. The Gibson here is going to replace that factory resonator with an x-pipe and open up some sound for sure, but it's not traditionally known for its loudness. This system is a full three-inch system from tip to tip, and this one here is the full stainless steel version that ends in four and a half-inch polished stainless steel slash cut tips. Gibson does offer this same system in black ceramic from behind the x-pipe and back, if you prefer that look too. Stainless steel is always a great option for the cars that see all different types of road conditions since it's going to offer corrosion resistance, and both systems do come with Gibson's lifetime limited warranty, and all of Gibson's products are made in the U.S. These catbacks are going to include Gibson's CFT Superflow Mufflers, which are chambered mufflers that don't have any packing. They're more of a resonance chamber design that forces the exhaust through directional tuning ports to give more of a tuned exhaust note. And like I mentioned before, this system comes with an x-pipe, which traditionally gives more of a raspier note than an h-pipe does, and just keep in mind that these are for the Fastbacks out there, so it's not going to be compatible with convertibles. When it comes to sound, I did mention earlier that this catback, while it does come with the x-pipe and the Superflow Mufflers, so while it's not going to be the loudest catback I have ever heard, it is going to have a good amount of volume as you already heard earlier. The resonance chambers in the mufflers do a bit of quieting down to give more of that tomb sound I talked about earlier. If we compare it to factory, at idle this is definitely deeper. I would say though that as the RPMs climb, this catback maintains some of that stock sound. It hits a point where it doesn't really get any louder as the RPMs increase, but it does maintain sound, and there is quite a bit of drone in the cabin at cruising speed as well. It's not really raspy like some other systems that I've heard either, even though it does have this x-pipe. There's a little hint of a raspy note in there, but it's not something that will make a person who really dislikes a raspy note cringe. There's also a little crackle on decel, which just adds a little something to the overall note. Overall, with all of that being said, I would say this system is a middle of the road system and I'm going to give it a three out of five on the loudness scale. If you're looking for loud on a budget, then there are some other options on the site that might suit you better than this one right here. I think it's safe to say at this point that a catback for an S550 Mustang is pretty much an investment when we start to look at the cost of these things. Gibson, like I mentioned earlier, is one of the only companies right now that's bringing you catback options for under 1,000 bucks. There's a few from Mac, Flowmaster, BBK and NBRP that are also in this price range, but with different offerings if you want to check those out. You're looking at right around $800 for this version right here with the stainless tips or for about $150 more you can have the black ceramic version instead. You do have to pay a little bit more for this coating though, but if that's what you're looking for then it's still not a bad deal. Honestly, these systems don't sound bad despite not costing an arm and a leg. When it comes to the install, you're going to be looking at an easy one out of three wrenches on the scale when we look at difficulty. This is considered a direct bolt-on item so you won't need to cut anything or modify anything to get it installed. All that you're really going to need is a socket set and a lift would certainly make things easier here, but the job can be done on stands as well. You're going to be removing the exhaust from the resonator back so an extra set of hands can make things easier for you here. You will be moving your hangers over to this new catback so I just recommend taking them off the factory exhaust when you drop that, because it will make the swap a little bit easier. The only other things you'll reuse are the front clamps off of the resonator for the front of the new x-pipe. When you go to install your new setup, as usual, it's probably a little bit easier if you start by hanging the mufflers first. The catback does come with two new three-inch clamps, but these clamps are really the bottom of the barrel as far as exhaust clamps go in my opinion. Personally, I'd probably grab some new clamps, but these will get the job done if you don't want to be that picky. You can figure on spending about an hour or two from start to finish to get all of this done. Overall, the Gibson Catback is right in the middle of the pack when we consider its loudness. I wouldn't say it's mild or so loud that it's going to get you in trouble either. It's also one of the most affordable, even if you do go for the black ceramic version. It's a full three-inch catback that comes complete with an x-pipe and it's a direct bolt on install that requires no cutting. You can check this catback out online some more for yourself and for all things Mustang, keep it right here at

Power and Sound. Installing a Gibson 3" Cat-Back Exhaust System will add an aggressive muscle car sound to your 5.0L GT S550 Mustang and increase its power output at the same time. Gibson has seen dyno proven power gains of 32 horse power and 34 foot pounds of torque at the rear wheels with this Cat-Back installed.

Race Car Growl. The included Gibson Performance X-Pipe not only helps increase the horsepower and torque of your S550 Mustang, but it also adds a crisp raspy race car growl to the sound of your exhaust with its modern "X" crossover pipe design - a sound that the stock factory "resonator" just can't match.

CFT SuperFlow Mufflers. Gibson's CFT SuperFlow mufflers with Convergent Flow Technology actually tunes your Mustang's exhaust note. This is done by using resonance chambers, directional louvered tuning ports and angular induction to draw exhaust gases through the muffler and expel them at a higher velocity. The result is a muffler that delivers more power and an aggressive performance sound with no packing to wear out.

High Quality Construction. Manufactured in the USA from 3" diameter mandrel bent stainless steel tubing for superior strength and corrosion resistance, this Gibson Performance Mustang Cat-Back Exhaust System features two "CFT SuperFlow" chambered mufflers that end with massive 4.5" diameter polished stainless steel slant cut intercooled tips for impressive muscle car looks and sound.

Lifetime Warranty. Gibson Performance is so confident in their exhaust systems that they are covered by a Lifetime Limited Warranty.

Direct Bolt-On Install. The Gibson Performance Cat-Back Exhaust with Mid Pipe includes all the hangers and clamps necessary to bolt straight up in the OEM factory location without any modifications required, making it a direct fit, bolt-on replacement upgrade.

Application. This Gibson Performance 3" Cat-Back Exhaust System with Polished Tips is specifically designed to fit 2015-2017 Fastback Mustangs equipped with the coyote 5.0L DOHC V8 engine. Not compatible with convertibles.
What's in the Box
  • (1) Right Muffler Assembly
  • (1) Left Muffler Assembly
  • (1) X-Pipe
  • (2) 3" Clamps
Installation Info
Tech Specs
Cat-Back Exhaust Specifications
Piping Material: Stainless Steel Tip Material : Polished Stainless Steel
Piping Size: 3" (steps up from 2.5") Tip Size: 4.5"
Muffler Type: Chambered Muffler Fitment: 2015-2017 GT

You Might Also Like

Customer Photos (2) Submit Your Photo

View All 2 Photos

Q & A

No questions about this product yet.

Ask the First Question

Customer Reviews (8) Write a Review

Overall Rating 4.2

out of 5 stars

Installation Time:Full Day

Installation Cost:$100-$250

  • Loudness / Volume 4.166667 4.2
  • Exhaust Note 4.166667 4.2
  • Fit & Finish 3.333333 3.3
  • Bang For Your Buck 3.833333 3.8

  • 5/5

    Installation Time: Afternoon

    September 12, 2017

    Grate sound

    Grate classic sound! Low notes have a grate rumble and high notes a slight hum. Pause you don't get a pop when you shift gears. All in all grate sound for the price tag.


    Year: 2017 Submodel: GT

    Helpful (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    September 09, 2017

    Fantastic purchase!!!

    Now my Mustang sounds like a real Mustang!!! Delivery came extremely fast!!!! I cant wait for my next mods!!!!


    Year: 2016 Submodel: GT

    Helpful (1)

  • 3/5

    Installation Time: Full Day

    January 29, 2017

    Ill fitting.

    Starting off, it sounds great. Very deep and rumbly, which is exactly what I was looking for. The X pipe fit fine. Everything behind the X pipe is terrible. To cut a long story short, the hangers are in the wrong place and the tips sit half an inch too close to the center of the car. Unmodified, the tips were touching the rear bumper and sitting a little too high. I bent them in a vice with a blow torch as far as I dared and that was just enough to get them not to touch the rear bumper. The clamps are too long, crudely made, and rub against the drive axle in most positions. I went over a speed bump and it tore one clamp off. 6 hours, a blowtorch, new clamps, and 4-5 re-fitments is all it will take to make this exhaust fit even passably. I guess you get what you pay for. It's good it sounds alright. But If i have to take it off one more time, it's going in the garbage.


    Year: 2015 Submodel: GT

    Helpful (2)

  • 2/5

    Installation Time: Afternoon

    November 13, 2016

    Poor alignment and bad drone

    This exhaust seemed to check all the boxes you could want in an aftermarket cat-back: X-Pipe, 3in diameter stainless steel tubing, intercooled polished tips, and best of all, at a great price. However, fit is poor, and the drone at cruising speed is unbearable. As for the fit, both driver side and passenger side tips sit half an inch too close to the center of the car, and touched the valance. I was able to re-align the hangers enough to get them to barely miss, but they are still off-center in the cut-outs. The hangers aren't able to move far enough to fix this, you would have to cut them off and re-weld them half an inch farther inboard on the mufflers. I purchased better band clamps for the rear to replace the U-bolt ones, which was good because the exhaust was packed so poorly that it had moved around, scuffed the mufflers, and lost one of the U-bolts in shipping. And it still leaks a bit, but that can be solved with slotting the ends and applying sealant. I would be happy to do all that, if it wasn't for the drone. Cruising at highway speed (60-80mph, 1500-2250rpm) under light throttle creates a drone so bad it exacerbates the slight trim rattle in my A-pillar. It sounds like a beehive in your head, just much deeper pitched. It makes any highway driving an unpleasant experience. On a good note, once you get over 2500rpm, it sounds great, especially when accelerating. It is louder than I expected. A little too loud. But it sounds exciting and it sounds mean. There are no 4-cylinder noises here! It's deep. It burbles. It breaks into a staccato roar over 4k. But it's a little too loud and drones so bad that I will be taking it off and selling it this week. Bottom line, if you want a great priced track exhaust and are willing to spend some time making it fit, then this is for you. If you daily drive your vehicle, then you should look at a different option.


    Year: 2016 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    November 01, 2016

    My 2015 GT w/Gibson Cat-back X-Pipe Exhaust System

    Just had this exhaust system installed on my 2015 Mustang GT...Wow what a difference in sound and performance, now everyone knows I'm coming down the road...It sounds great with that deep growl and on the hwy when I'm cruising it's a nice tone, not too droning, either...I check around before on which system to buy and I decided to get the Gibson, since I heard them on another 2015 @ this yrs Ford Carlisle show in June...and they are a lot less$$ than other exhaust system...most cost > $1000..these are $750 w/my Mustang club discount...a great deal...I'm very happy with this exhaust system...


    Year: 2015 Submodel: GT

    Helpful (2)

  • 5/5

    September 10, 2016

    Awesome sound

    I am super impressed with the fit and finish of this exhaust and it sounds amazing! At lower RPM it has nice burble and deep muscle car tone. At higher RPMs it really starts to sing. Raspy tone but smooth/clean at the same time. Not annoying or off-putting in any way. I've put a few hundred miles on it now and I am not experiencing anything I would call drone. In 6th at 50-60mph there is a slight vibration and its louder but I don't drive in 6th at that speed anyway. While cruising and taking it easy it's not that loud to be annoying. When you let off the throttle you hear a deep burble and it sounds amazing dying down to a stop. Engine seems to rev happier and harder at high RPMs and I think a slight bump in horsepower. The 4.5" exhaust tips look so amazing coming out the back. So glad I would with an X pipe and got rid of the resonator. It's opened up my car and now it sounds like the V8 it is. This is how the car should sound from factory. Smooth and mean - V8 music to my ears!


    Year: 2015 Submodel: GT

    Helpful (2)

  • 5/5

    August 01, 2016

    gibson cat back with x pipe

    the system was an easy install sounds great and did notice some mid range performance gains. has some inside drone. buy some better clamps if you want to remove it at any time.


    Year: 2016 Submodel: GT

    Helpful (2)

  • 4/5

    Installation Time: Afternoon

    April 08, 2016

    Great Exhaust.

    Good System for the money. Cabin Drone a little high. Great External Note!


    Year: 2016 Submodel: GT

    Helpful (2)

Related Mustang Categories