(approx) 2 Hours
Light to Moderate mechanical skill required.
Hey, everybody. I'm Justin with AmericanMuscle.com, and this is my breakdown of the Stainless Works Retro Chambered Catback Exhaust System with H-Pipe, available for your 2015 Mustang GT. If you guys are looking for a high quality, perfect fitting catback system that will give your Mustang that old school muscle car rumble, well, then you have to check out the Stainless Works Retro Chambered three-inch system for your S550. Now, as you've just heard, this system will give your Coyote-powered GT that old school throwback Mustang sound that was big with the hot rods back in the day.That deep rumble is a combination of the included H-pipe here, along with Stainless Works' unique retro chambered mufflers. Now, these things are unique in the fact that they do offer a straight-through design along with that straight-through performance, but they do have enough baffling that's gonna keep any excessive rasp to a minimum, that can sometimes come along with having a straight-through muffler. Now, because of this, you can expect a relatively tame tone while cruising around, but these things really do come to life when you get into it. And the best part is absolutely zero drone while on the highway. All right, guys, as for the construction, we're looking at 3-inch mandrel bent tubing, all of it which has been made from 304-grade stainless steel, including these 4-inch mirror polished conical wall tips. We would like to point out since you are ditching that heavy factory exhaust and suitcase style resonator and switching to a full stainless system here, you're gonna be shaving roughly 20 pounds off the car, which is never a bad thing. Another big thing I wanna point out here is that this particular catback that I have in this video is designed to work specifically with 2015 Mustang GTs that still have the factory manifolds or factory headers in place. Now, if you guys are looking to do long tubes down the road or maybe at the time of the purchase of the exhaust, then you should definitely check out the Stainless Works option with the performance connect, meaning it's designed to work specifically with those Stainless Works long tube headers. When it comes time to get dirty, guys, you wanna leave yourself about two hours to get this catback installed from Stainless Works. I will say that doing the exhaust systems on the 2015s have been made a lot easier, thanks to the addition of the independent rear suspension. But either way, give yourself a couple of hours, grab an extra set of hands if you can, and make sure you have a good set of quality tools before you get started. As always, if you have any questions about this particular system here or about the install itself, feel free to reach out to a Mustang expert any time. So if you're looking for a well-built, great sounding system, and really prefer that old school muscle car rumble. Well, then you guys are gonna have to check out the Retro Chambered Catback Exhaust System from Stainless Works, available right here at AmericanMuscle.com.
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Features, Description, Reviews, Q&A, Specs & Installation
Fitment: 2015 2016 2017 Details
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September 04, 2019
Just what I wanted
Easy install, need to adjust after a few times but then it's good. Amazing tone deep rumble with just a hint of raspHelpful (0)
January 27, 2019
Afetr having looked over what seems like thousands of sound clips for various different exhaust kits, i decided on selecting this one. Let me tell you i have no regrets. The exhaust note is perfect. Not obnoxious or raspy, but a nice deep tone. 10/10 would recommendHelpful (2)
November 01, 2018
Stainless works retro catback
Took me about an hour and a half to bolt it onto my car. It has the low old school rumble which is awesome. A little louder than I thought it was going to be but definitely not going to complain about it at all. No raspy tin can sound, but does done a bit in 6th gear. I would buy it again no problem if I was starting over.Helpful (5)
August 05, 2018
The look and sound is amazing out of this exhaust. I think it's just right!!! Especially in sport mode,,, we have a 16 GT Premium and was a little worried about some of the other reviews, but top notch sound,,, idle is better, wake the neighbor isn't that bad, just a great sound!!! Thank YouHelpful (7)
July 03, 2018
Great Sound But Drone at Highway Cruising
Beautiful 60's Muscle car sound and it looks great. There is a very noticeable drone at highway cruising 1700-1900 rpm. Not sure why more people are not mentioning this as it is an issue if you are doing a long trip. I have the Manual 6 speed and the drone is only there in 6th gear at those rpm's otherwise the system has an amazing sound. If i plan to do a long trip i will swap the exhaust out at home. Does not take long to swap.Helpful (8)
June 20, 2018
OK but not great
I have mixed thoughts on this exhaust system. First, the positive...I love the sound. This thing makes my 2017 GT sing the right song and hit all the right notes. But...it is MUCH LOUDER than I expected. Not so loud that I would remove it, but loud enough that I would not buy it again. Also, the alignment is difficult to achieve and maintain. After a couple of different times on the lift, I am still struggling to get the driver side tip to remain centered in rear valence. I called the manufacturer, sent them some photos, and they failed to call back or offer any suggestions.Helpful (7)
June 19, 2018
Awesome Muscle Car deep tone and exhaust note!!
I truly believe, that I must have listened to 100's of exhaust sound clips on the internet before making a decision to buy this exhaust system. I wanted a new exhaust system that didn't sound raspy when paired with the Coyote power plant. This system absolutely delivers the Muscle Car sound I was wanting and desiring to the point I feel like Steve McQueen in his 1968 Mustang GT fastback 390 4v!! I cannot get over the deep muscle car like exhaust note this system produces, which only seems to be getting better during the past 6 weeks of ownership!!! If you're as particular as me and are wanting a deep tone and not a raspy tone like the other exhaust systems, then don't wait and buy this one because you'll not be disappointed!!Helpful (11)
May 31, 2018
Deep Rumble. Like the older cars
The sound that this system makes is great. A deep tone rumbling. Like the old exhaust. I’m older and mid mufflers were to loud for me at hi speed. American Muscle got me New mids to tone down. Love The SoundHelpful (11)
March 28, 2018
Overall Great Purchase
Install was pretty easy, resonator was rusted on so we had to cut stock exhaust, but otherwise was easy to mount. Exhaust note is fantastic, not loud by any means but defiantly gives the Coyote a stage to sing its beautiful song on. Have not dyno'd yet, waiting on the matching manifolds to come in.Helpful (12)
February 17, 2018
Sounds better than any exhaust I’ve heard for the S550, It’s loud but not too loud, and it sounds like an old muscle car with a real deep tone. The video on AM sounds similar to it but not exactly how it sounds. When I heard the sample video I didn’t like how it sounded higher in the RPM range but it doesn’t sound like that in person. I find myself downshifting a lot more just to hear it. It sounds it’s best between 1500 and 3000RPM. I have a manual GT/CS with 3:55’s and on the highway (60MPH) I’m turning around 1500-1700RPM and it does have some drone, nothing too bad but it’s enough for me to slow it down to about 57MPH to get out of it. The only complaint I have about it was the fitment, one side hangs lower than the other and I need to adjust it.Helpful (9)
What is the sound difference between this H-pipe version and SW's X-pipe version?
With the H-pipes these will be deeper and more of a classic muscle car sound! Whereas the X-pipe will be more so on the raspy side and more of a newer car sound.
Am I going to wake the neighbors with these? If it's only a few, that's okay :) I live in an apartment complex and don't want to be 'that guy', if it can be helped. I'm getting ready to replace the stock sound.
These are going to be louder than factory, however, not overbearing in volume and has a classic sounding deeper rumble.
Do they come with clamps?
The Stainless Works 3 in Retro Chambered Catback Exhaust reuses the factory exhaust.
What kind of horsepower gain can I expect from this exhaust system?
We do not have horsepower ratings on our exhausts as the horsepower numbers are rarely affected with a new exhaust setup.
Keeping in mind I have no current plans to supercharge my S550; what is better for overall performance gains with bolt-ons: this system? Or the LMF 3in core system?
Both systems will offer around the same performance gains because they are the same 3 inch diameter.
Unfortunately, the Stainless Works 3 in Retro Chambered Cat-Back Exhaust w/ H-Pipe is specifically designed to fit the 2015-2017 GT Fastback Mustang with the factory exhaust manifold. This Cat-Back will not be a direct bolt on to long tube headers. You will need to do some modifications in order to make these parts work together. We recommend professional installation if you plan to install both of these items.
The Stainless Works 3 in Retro Chambered Cat-Back Exhaust w/ H-Pipe is a loud system, but gives more of a deep tone rather than a loud screaming tone like the Corsa Sport will give you.
Assuming they carry over the SW part numbers: M15CB is the 2.5" core M15CB-LMF would be the 3" core Though I do NOT work for either company so this is a "best guess"
No, this is not compatible with convertibles, as they sit lower.
As long as the Pyped are 2.5" connections these will work together yes.
This would not be CARB approved no.
The BBK Ceramic Long Tube Headers - 1-3/4 in. and this Stainless Works 3 in Retro Chambered Cat-Back Exhaust w/ H-Pipe will connect to each other when using the BBK 3 in. Long Tube Header Adapter Mid Pipe (Item 389770 or Item 389771).
The Stainless Works 3 in Retro Chambered Cat-Back Exhaust w/ H-Pipe - Fastback (15-17 GT) may not be a direct fit since you have different headers. This exhaust system is designed to work with the factory exhaust manifolds. This may not be a direct fit with what you have on the car, but if you're willing to do some modifications, you can definitely get it to work.
Due to the different bracing that the Convertibles have, the Stainless Works 3 in Retro Chambered Cat-Back Exhaust w/ H-Pipe - Fastback (15-17 GT) are only compatible with GT Mustangs that have factory manifolds.
(approx) 2 Hours
Light to Moderate mechanical skill required.
What's in the Box
|Piping Material:||304 Stainless Steel||Tip Material :||Mirror Polished 304 Stainless Steel|
|Piping Size:||3" (steps up from 2.5")||Tip Size:||4"|
|Muffler Type:||Retro Chambered 2.5" Core||Fitment:||2015-2017 GT Fastback|
Not compatible with Convertibles due to different bracing; This Cat-Back is for 15-17 GTs with factory manifolds only.