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JBA Modular X-Pipe - 3 in. to 2.75 in. (11-14 GT)

30 Reviews
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  • Item #23137
  • MPN# 1785SX

  • Market Price $329.99
  • You Save 9% ($30.00)
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  • Improves Exhaust Flow for More Power
  • Raspy Race Car Growl
  • Free Flowing Mandrel-Bent Stainless Steel
  • 3" to 2.75" Tubing
  • Smog Legal - When Reusing Your Stock Catalytic Converters
  • Off Road Use - When Using the Included 3" Cat Delete Downpipes
  • Fits 2011-2014 GT Mustangs
Improves Power. Add even more horsepower and torque to the rear wheels of your 5.0 Coyote Mustang with a JBA After Cat X-Pipe. The JBA high flow X-pipe significantly improves your GT's exhaust flow to increase overall performance. This JBA X-pipe is designed to be used with JBA's shorty headers or the factory manifolds.

Race Car Growl. This free flowing JBA X-pipe for your 2011-2013+ 5.0-powered GT not only increases power, but with its modern "X" crossover pipe design it also adds a crisp, raspy, race car growl to the sound of your exhaust.

Street Or Off-road Use. The JBA GT X-Pipe bolts up directly behind the factory catalytic converters with no cutting required making your Mustang 100% smog-legal. Or you can install the included stainless steel "cat delete" downpipes for even more power making your x-pipe perfect for off-road use.

Quality Construction. The After Cat high-flow X pipe is made to last, using durable 3" stainless steel tubing that steps down to the factory 2.75" diameter. With its smooth, precise mandrel bents, there are no kinks to rob you of power.

Reusues Factory Catback. This 3" to 2.75" JBA mid-pipe can reuse the factory catback exhaust or an aftermarket catback exhaust system with a 2.75" pipe diameter.

Application. This JBA high flow After Cat X-pipe is designed to fit the 2011-2014 GT with either the factory exhaust manifolds or aftermarket shorty style headers installed. Reuses the stock Catalytic Converters.

Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (1) X-pipe
  • (2) Cat-delete down tubes
  • (4) Bolts
  • (4) Nuts
Installation Info
Tech Specs
Style Mid Pipe: Standard "X" Type Headers Required: Shorty or Stock Manifolds
Piping Material: Stainless Steel Piping Size: 3" to 2.75"
Catalytic Converter: Reuses stock Catalytic Converters Fitment: 2011-2014 GT Mustangs
Will it fit my Mustang?
  • Boss 302 - 12, 13
  • GT - 11, 12, 13, 14

Most Helpful Reviews

Great addition, Intimidating sound...

Just installed this on my 2013 GT. It took a couple of hours due to putting it on in my drive way (I don't recommend). Ford so graciously designed the coupling bolts of the cats where the head of the bolt ...

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Helpful (5)


Top 250 Contributor

WOOO loud

I have a 2011 mustang 5.0 with Roush CAI and Roush Axle Backs, and this sucker is loud. I have been debating on putting the cats back on, and leaving the x pipe, as the drone on the highway is insane. ...

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Helpful (4)

Read All 30 Reviews
Overall Rating 4.1 out of 5 stars

Customer Photos (6) View All Photos

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2 Questions / 4 Answers

Ask a Question

What clamps should be used to connect the cat delets to the x pipe since the kit comes without clamps? I was wondering if I'm going to have to go buy clamps from a muffler shop to attach the cat delete pipes to the x pipe since I want to go with a offroad set up. I want to avoid welding in order to switch back to a catted setup for when inspection time comes around.

Kaleb828 Year: 2013 Model: Boss

  • Kaleb, Youll need to gently remove your factory clamps and reuse or purchase new from dealership as that is the style clamp that is used. I ran the cat delete, factory mid pipes with resonators and kooks axlebacks with the ghost cam tune and it sounds sick. Use caution, with an agressive axleback or muffler delete ie Pypes/Rousch etc. Its gonna be loud. Hope this helps.

    Best Answer

    RecentConvert Year: 2012 Model: GT

    Good Answer (1)

Show 2 more answers Question Resolved

Tune required? Is a tune required for the engine to run properly after a mod like this since it gets rid of the cats?

OneBadFourSix Year: 2013 Model: GT

  • Yes, for the engine to run properly, especially up to potential, a tune would be required unless the down pipes were not used (as this is of course a modular system). Even in that case I would still highly recommend a tune. A custom Bama tune will be the one thing that brings all your mods that bang for buck.

    Kylw Year: 2011 Model: GT

    Good Answer (0)

Answer This Question I need this answered (0) (0)

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Customer Reviews (30) Write a Review

Overall Rating 4.1

out of 5 stars

Installation Time:Afternoon

Installation Cost:0-$100

  • Loudness / Volume 4.333333 4.3
  • Exhaust Note 4.466667 4.5
  • Fit & Finish 3.433333 3.4
  • Bang For Your Buck 4.066667 4.1

  • 5/5

    Installation Time: Afternoon

    June 18, 2012

    Great addition, Intimidating sound...

    Just installed this on my 2013 GT. It took a couple of hours due to putting it on in my drive way (I don't recommend). Ford so graciously designed the coupling bolts of the cats where the head of the bolt faces towards the floorboard so you will need a pivet racthet to get them off. I also recommend having someone to help you hold the x-pipe while you work on connecting/tighten all the couplings. I didn't use the off-road pipes and glad I didn't. My set up is this x-pipe, roush axle back, roush cold air intake. I searched and searched youtube/google to find what would make the perfect sound and performance. I could not be more pleased. Before install of the x-pipe, I thought my system was loud enough. Did some web surfing one night and came across this product and boy, what a grin I had after install!. I recommend this pipe to any 5.0 owner. Again, I believe the off-road pipes would have been too much for a daily driver. 5 stars!!!


    Year: 2013 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Panama City, FL, USA

    Helpful (5) (0)

  • 4/5

    Installation Time: Afternoon

    April 25, 2013

    It will leak

    Sounds great, but JBA should send sleeve clamps for where the cat down connects to the X pipe, the ball and joint style clamp used WILL LEAK, It leaks badly on both sides. I am waiting for new clamps to be delivered, many people have had this problem so idk why AM or JBA doesn't address this issue.


    Year: 2013 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 3 St. Louis, MO

    Helpful (4) (0)

  • 5/5

    Installation Time: Full Day

    October 09, 2012

    WOOO loud

    I have a 2011 mustang 5.0 with Roush CAI and Roush Axle Backs, and this sucker is loud. I have been debating on putting the cats back on, and leaving the x pipe, as the drone on the highway is insane. The car starts at about 1000RPM in being loud. Once the car warms up, you can baby it and go past cops no issue, but golly I feel bad stepping on the gas in neighborhoods as it is soooo loud. Install was a PIA. Mostly because at 12000 miles breaking the bolts loose was a pain. I got all free but the one through the engine bay. I ended up buying craftsman rounded bolt remover sockets, and the nute tore off real easy. Since I won't be using it again, didn't care it tore the bolt up taking it off. Install prices I was quoted, in Cincy, for comparison, was about 180-200. That is why I did it myself. I don't know where people are getting them done under 100, as the only shops that would, wouldn't take the cats off, and was probably part of the price difference. running Bama 93R with ghost tune, sounds amazing!

    Top 250 Contributor


    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 Cincinnati, OH.

    Helpful (4) (0)

  • 3/5

    Installation Time: Afternoon

    May 02, 2013

    Fitment issues

    I installed the first JBA X pipe and it leaked using the factory ball/socket clamps where the cat delete meets the X pipe. I called AM and they sent me another one because after looking at it the pipes they did not fit flush. Note I even took it to 3 different exhaust shops. I received the new one and it is still cut short on the passenger side about a half an inch. I had to buy exhaust sealer to stop the exhaust leaks. Fitment was horrible. It cant be my cat back because it is where the JBA cat delete meets the JBA x Pipe


    Year: 2012 Model: GT Driving Style: Show 'Stangs I have owned: 1 Springfield, MO, USA

    Helpful (3) (0)

  • 3/5

    Installation Time: Afternoon

    December 04, 2012

    Good but could be better

    I installed this xpipe to the factory cats, didn't want to delete cats just yet as I heard the tone would be extremely loud with my roush axle backs. Fit and finish to the factory cats could be better. It's not as polished of a fit as the factory ball and flange. One side of the tubing seems like its actually a few degrees off an runs close to an undercarriage brace. I have leaks around both of the factory exhaust straps that I reused. They only leak where the strap is compressed by the bolt, weird. I will have to tinker with it more and try to resolve the leaks or try different straps or something. Test drive felt better even with the leaks. Felt like it flowed better while accelerating and decelerating. Tone didn't change much. I would say a little less popping and smoother if that means anything to you. All in all not bad but nothing to write home about.


    Year: 2012 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 wpb, fl

    Helpful (2) (0)

  • 5/5

    Installation Time: Afternoon

    July 29, 2012

    Fitment is good. Sounds amazing!

    Overall the fitment is good with this x pipe. On the passenger side where it meets the stock catback, the pipe is about 1-2 degrees off center, making it hard to get the clamp on. But there are no leaks or other fitment issues. Also, one of the cat delete pipes is marked "passenger", but it was actually the drivers side. As far as sound, this pipe is amazing! Coupled with the Flowmaster American Thunder axleback I bought from American Muscle, it sounds wicked! Then to top that off, I updated the tune from Bama that included Ghost Cams... If you want attention, get this tune! It sounds absolutely amazing!!! Thank you American Muscle for great products and services!!


    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 5+ Orlando, FL

    Helpful (1) (0)

  • 3/5

    Installation Time: Afternoon

    March 23, 2013

    Great Price, bad fit.

    The JBA cat delete pipes and x-pipe are made of good quality materials and the welds on the x-pipe are really good. The tone of the exhaust at idle and while driving is a little louder and raspier sounding, but at anything above 3/4 throttle the car sounds awesome. I do not like a loud obnoxious exhaust so this is perfect for what I like. Installation took a little over 2 hours but I did it in my garage with ramps. The two complaints that I have are that they want you to reuse the stock clamps from the mid-pipe to the x-pipe. They should have supplied two 3 inch band clamps that cost a total of $12. Also on the passenger side the cat-delete pipe and x-pipe were about 1.5 inches off and the pipes were about 2 inches from even touching. If the fit was better I would say without a doubt I would recommend this but you may want to save a little more $$$ and go with the magnaflow x-pipe and mid-pipe and I am pretty sure, everything will fit good.


    Year: 2013 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 SoCal

    Helpful (1) (1)

  • 5/5

    Installation Time: Afternoon

    October 11, 2012

    Great sound and great price!

    Installed the JBA x-pipe with the cat delete option a few days ago and I absolutely LOVE the sound!!!! Totally changes the sound of your 5.0! The construction was solid and it's overall a great quality product at a really good price! It will take some time and carefull adjusting to get the cat delete pipes to line up with the x-pipe but after a bit of tweaking I got it on just fine! I was deciding between this and the magnaflow off road x-pipe and went with this one cause it was $200 cheaper and I couldn't be more pleased!!!

    Top 250 Contributor


    Year: 2013 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Memphis, TN

    Helpful (1) (1)

  • 2/5

    Installation Time: Afternoon

    May 11, 2014

    JBA x Pipe

    Decent product if you do not intend to use the provided cat deletes. the construction is good, but the cat deletes to x pipe connecting is vey bad with the stock clamps that are recommended by JBA, I ended up getting aftermarket band clamps and they still leaked. I could only live with the leak for 2 days and have no re installed the factory cats which has stopped the leak. if you want an off road set up look at another product


    Year: 2014 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Charlotte, VT, USA

    Helpful (0) (0)

  • 4/5

    Installation Time: Afternoon

    April 12, 2014

    14 GT love the sound.

    Looked at this x-pipe for a long time before going for it. Straightforward install and I'm no mechanic so if I can do it most anyone can. Took most of a Sunday afternoon. Hardest part was taking off the stock cats. Only because of the way the factory has the bolts facing up whereas you have to have one heck of a long extension for the passenger side cat. It does help to have someone handy to help hold things in place when tightening things back up. No leaks and I reused all stock clamps. Went with GT-500 axlebacks and this setup sounds strong at idle but not obnoxious. But.......when you hit the throttle instant racecar just add track!!!! Couldn't be more happy!!!!!


    Year: 2014 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 1 Washington

    Helpful (0) (0)

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