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Stainless Works 3-Inch Retro Chambered Cat-Back Exhaust (11-14 GT; 11-12 GT500)

Item 101827
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      Review & Installation Video

      The Stainless Works retro chamber cat-back exhaust is a three inch cat-back for the 2011 to 2014 GT, and the 2011 to '12 GT500 that's made from the best materials, 304 stainless steel, and it's gonna to be for someone that's looking for a cat-back that'll make the S197 loud. This cat-back gives a lot of volume, and according to the customer reviews, it's one of the best sounding in many peoples' opinions. The install for this cat-back is not gonna be difficult. It's a one outta three wenches in the difficulty meter, and you can plan on spending about two hours to get the install done. The mufflers that Stainless Works uses are gonna be the key component behind the sound that this thing produces. They're retro-styled chambered mufflers. So you can see right here, that these don't really look like traditional mufflers. They look more like a straight through design but they aren't. These are cambered mufflers, which means that the sound here is gonna be a little bit more tame than what you get with a muffler delete kind of cat-back. Don't let that fool you though, this system is loud. I'm gonna call it a five outta five on the loudness meter, with a one being a quiet upgrade and five being a loud upgrade. The chamber mufflers here give more of a controlled sound than a muffler delete setup would. And I personally like that because you don't have uncontrolled sound. The cat-back is deep, and of course it gives more volume. It does have a small hint of raspiness to it, but just a little bit. And of course there is a little bit of gurgle in D-cell . Most people love this cat-back because it gives what a lotta people consider a true muscle car sound without being overbearing. Sound aside, this cat-back has some other good features to it too. This is a three inch cat-back that's made from 304 stainless steel tubing, which is the top of the line when it comes to materials. 304 stainless steel is gonna have the longest lifespan, especially if your car is a daily driver. And the tips are mirror polish, and they're 304 stainless steel as well. Price-wise, you're looking at spending just south of a $1,000 for this cat-back. This puts it right in the middle of the pack if you wanna compare it to other cat-backs. That being said, if this is a little bit too expensive for you, there are other less expensive options out there. I would just say to keep in mind the materials you want when you're shopping around for less expensive options because a lot of the less expensive cat-backs aren't 304 stainless steel like this one here is. When it comes to the install, you're gonna be looking at an easy one outta three wenches in the difficulty meter. 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 gonna need is a socket set, and a lift would certainly make things easier, but the job can be done on jack stands as well. You're gonna be removing the exhaust from behind the stock mid-pipe, and so an extra set of hands can make things easier for you here. You will be moving over your hanger to the new cat-back. So I just recommend taking them off with the factory exhaust when you drop that. It'll just make the swap a little bit easier for you. When you go to install your new setup, it'll probably be easiest to leave everything loose until you have it all lined up and then tighten it down. The cat-back does come with four new clamps for use so you don't have to worry about picking those up. You can figure on spending about an hour or two from start to finish to get all of this done. That's gonna do it for this review of the Stainless Works three inch retro camber cat-back. And as always, feel free to head back to the product page right here at

      Product Information

      Features, Description, Reviews, Q&A, Specs & Installation


      • Aggressive Muscle Car Exhaust Note
      • Retro Styled Chambered Mufflers
      • 3" Diameter 304 Stainless Steel Tubing
      • Mirror Polished 304 Stainless Steel Tips
      • Direct Fit Replacement Upgrade
      • Designed and Manufactured in the USA
      • Fits 2011-2014 GT and 2011-2012 Shelby GT500 Mustangs


      Aggressive Exhaust Note. Add the loud aggressive exhaust note of a classic 60's muscle car to your high powered V8 Mustang with a Stainless Works 3" Retro Chambered Cat-Back Exhaust system. This Stainless Works Cat-Back not only sounds great but saves weight as it is 41 lbs. lighter than the factory exhaust system.

      Stainless Steel Construction. Constructed in the USA from 3" diameter 304 stainless steel tubing for strength and superior corrosion resistance, this Stainless Works Mustang Cat-Back exhaust system features two round retro chambered mufflers that end with mirror polished 304 stainless steel slant cut exhaust tips.

      Direct Fit Upgrade. This Stainless Works Mustang Cat-Back includes all the hangers and clamps needed to bolt straight up to the factory Mid-Pipe without any modifications required, making it a direct fit replacement upgrade.

      Application. This Stainless Works Retro Chambered Cat-Back is specifically designed to fit the 2011-2014 GT and 2011-2012 Shelby GT500 models with either an automatic or manual transmission.

      Fitment: 2011 2012 2013 2014 Details

      MPN# M12CB3

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (7)

      Write a Review

      Ratings Summary

      4.6 out of 5 overall rating from 7 customers

      Installation Time: Full Day

      Installation Cost: $100-$250

      • April 23, 2018

        5 2012 GT - KonaBlueGT Installation Time: Afternoon

        Great old school rumble

        I'm very pleased with the cat-back. The sound is just what I was hoping for; it gives a nice bark on cold start-up, but mellows out to a nice wop-wop-wop at idle (it shouldn't upset my neighbors as I make my way in and out of the development. It has a very aggressive tone though as you get on the throttle! Previously I had Flowmaster American Thunder axle-backs; I liked their sound at idle and when accelerating, but the drone was horrendous at cruising speed (about 70 mph). The SW Chambered has slight drone at that speed, but is certainly acceptable. Installation is better w/2 people, especially when adjusting the tips at the end. We only had Race Ramps so had to cut the factory exhaust at the first bend near the axle. Also, loosening one end of the panhard bracket gave us an additional inch or so of clearance. Started with the driver side and that took about 45 min; with that experience the pass side took just 20; tip adjustment took about 30, then another 10 for readjusting after the first drive.

        Helpful (12)
      • November 16, 2017

        2 2011 GT - valanahara Installation Time: Shop Install Installation Cost: $100-$250

        Sounds great, quality is lacking

        I have had this exhaust for almost two years now and while it sounds amazing, the quality of the product is seriously lacking and SW does not honor their "warranty" well at all. I've had problems with their clamps coming lose several times, and had a hanger bend on me recently causing bad rattling and sagging.

        Helpful (11)
      • October 07, 2017

        5 2014 GT - RobertT Installation Time: Afternoon

        Great Exhaust

        For about two or three weeks I was looking for the right exhaust. When I first heard these in videos, it grabbed my attention. After getting them put on by a shop (which only took about 40 minutes) I was left with an amazing sounding 5.0. She roars when you press the gas, but gives a soft growl when at idle or cruising. It's loud when you get on it, but tame when you're just driving around.

        Helpful (12)
      • March 16, 2016

        5 2014 GT - Green50 Installation Time: Shop Install Installation Cost: $100-$250

        Well worth the money!

        Couldn't be more happy with this catback system! Paired with the magna flow tru x x pipe, it's just the sound I've been looking for. Low deep rumble, but not too obnoxious. Tips hang out a little further than the super 44 flowmasters did..but overall, very pleased. Price was also quite a bit less than the other websites.

        Helpful (11)
      • December 10, 2015

        5 2011 GT - GMoney Installation Time: Less than 1 Hour

        Sounds great

        I was listening to a lot of different exhaust systems looking for that unique sound that I wanted. This one appealed to me the most and I love the sound. It sounds amazing.

        Helpful (11)
      • May 29, 2015

        5 2014 GT - BeanNrice Installation Time: Afternoon

        This catback is awesome

        I installed this in about 2 hours in a buddy's shop lift, the material is a very good high quality stainless steel. I had some fitment issues with the over axel bends, had to remove a couple of bolts on a bar and replace them when completed with the install. Also had some issues with the clamps that hold the tips to mufflers/resonators on the rear, not anything a little weld can't fix. But other than these small fitment issues the sound is very good loud and slightly raspy, low rumble at idle nice growl when the RPMS increase, no drone in vehicle at all, maybe a little around 2000 but nothing annoying to the ear, over all this is worth the buy

        Helpful (13)
      • May 08, 2014

        5 2013 GT - CloDevious Installation Time: Shop Install Installation Cost: $100-$250

        Best sound a Coyote can make!

        This has to be one of the best sounding exhausts. It has the possibility of being to loud for some people though. During cold start it will set car alarms off even with cats and there is a constant thump at idle. But if you want that feel and sound of old school muscle this exhaust should do the trick. The quality of the exhaust is fantastic! The only issue I have with it is its a very tight fit. The clearance over the axle is close and it does rattle sometimes when I hit a bump. Could just need more adjustment and fine tuning. There will be some drone around 2k rpm, personally drone does not bother me so I don't care, but worth noting. I have talked with Stainless Reps about it and they say the drone does stop if you do a full stainless works header and xpipe setup along with the catbacks.

        Helpful (16)

      Questions & Answers (3 answers)

      3 Top Rated Questions

      will this item fit with the 1 7/8 header x-pipe combo from stainless works? the item is #101824

      • Stainless Works 3 in Retro Chambered Cat-Back Exhaust is designed to be a direct bolt on for the factor mid pipe. It will fit with the Stainless works mid pipe as well.

      Helpful (1)

      So this comes with a 3" to 2.5" connector to fit to the stock midpipe?

      • While it does not come with a separate connector, the piping on the Stainless Works 3 in Retro Chambered Cat-Back Exhaust has a 3" to 2.5" step down for a direct fit to the OEM Midpipe.

      Helpful (0)

      Looking at doing a full SW exhaust from headers back. I hear a lot of complaints about drone. I spoke with SW and they said people confuse drone with volume. Anyone have this setup? I have a 2014 btw.

      • Stainless Works Exhaust Systems do not feature much drone. They are very loud and unique in sound, so people may mistake volume for drone. I suggest watching some exhaust clips of their systems on Youtube to give yourself a better idea of what it will sound like.

      Helpful (0)
      Post Your Question

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (2) Muffler Assemblies
      • (2) Over axle pipes
      • (2) Exhaust pipes

      Tech Specs

      Cat-Back Exhaust Specifications
      Piping Material:304 Stainless Steel Tip Material :Mirror Polished 304 Stainless Steel
      Piping Size:3"Tip Size:4"
      Muffler Type:ChamberedFitment:2011-2014 GT, 2011-2012 Shelby GT500

      Will It Fit My Mustang

      • Boss 302 - 12, 13
      • GT - 11, 12, 13, 14
      • GT500 - 11, 12

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