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BBK Catted X-Pipe (11-14 GT w/ Long Tube Headers)

Item 56112
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      Review & Installation Video

      Stephanie: Hey guys, Stephanie with here with my review of the BBK shorty X-pipe available in either catted or off road versions fitting all BBK long tube header equipped 2011 to 2014 GT Mustangs. This one's pretty easy as far as who it's going to be for. This shorty X-pipe is going to be for anyone that plans on using BBK's long tube headers on their Coyote powered S197 GT. Whenever you go from a shorty or factory header setup to a long tube header setup, you're going to need to change your mid-pipe to a shorty mid-pipe. There are some options out there that come as a complete package, the headers and mid-pipe together, but BBK has broken these two up so you can have different options when it comes to going catted or non-catted. Like I just said, you do have two options when it comes to this mid-pipe, an off road version which I have with me here and which does not include any kind of cats and is typically going to give you the most power and sound gains, and a catted version that has two high flow cats. Both options are constructed from three inch mandrel bent aluminized steel tubing, and both options feature a factory style two and a half inch connection that will work with most aftermarket catbacks in addition to your factory exhaust. Along with that you'll also notice 202 bungs along with the included flanges. The high flow catted version of this mid-pipe is going to cost between $400 and $500. Like we usually see, the catted version is going to be the more expensive of the 2 options, costing about $200 more than the off road version. That puts the off road mid-pipe in the $200 to $300 price range, being slightly closer to $300. It is pretty typical to see a catted version of exhaust being more expensive than the off road setup, but it will be more appealing to those of you with strict emissions rules or those of you that aren't looking for the loudness level that an uncatted mid-pipe will have. Also, keep in mind that you won't be running this mid-pipe without a set of BBK's long tubes, so you can factor those into the price of the shorty X-pipe. These items go hand in hand since you can't really install one without the other, which is another reason why long tube headers are pretty much an investment. Either way, all of BBK's header and mid-pipe options are coming in on the more budget friendly side of things no matter which options you end up choosing. You could be looking at a whole long tube and mid-pipe setup for well under $1000, which is going to be one of the most affordable options here at AM. With all of that said, the quality of the BBK options might not be as nice as some of the other options here on the site. I'm basically looking at materials when I say this. This BBK mid-pipe is aluminized steel like I mentioned earlier, while the higher end brands like Kooks, LTH, Stainless Works and even JBA are a full stainless steel if not a full 304 grade stainless steel. This isn't really going to have an impact on performance at all, but it just won't be as nice of a material, which may not even be a concern to you if your Mustang isn't a daily driver or it only sees mild weather. You may not necessarily be installing long tubes and a shorty mid-pipe for sound, but you are going to get a huge change in sound. The long tubes alone are going to change the sound of your exhaust. When you combine that with changing the mid-pipe, you can expect a pretty big difference in sound here. Obviously if you go uncatted all the way it is going to be louder than if you stick with high flow cats. Either way, you're looking at a brand new sounding Pony when you're done.At the end of the day you're looking at both power and sound gains here. In fact you can expect gains of 20 to 25 wheel horse depending on your setup and tune, in addition to an awesome change in your exhaust tone. Speaking of a tune, you will need a tune after the install here. Anytime you go with a serious mod like this setup you can pretty much expect to need a tune along with it. The install of this X-pipe alone is not difficult at all. It's just a basic mid-pipe split up that doesn't involve removing any other items or any cutting. But, since you'll most likely be installing this along with those BBK long tube headers, you can expect a project. Because of the combo install, you can expect a full three out of three wrenches on this one and a full day in the garage if you do decide to tackle this yourself. If you don't have a helping hand or don't have much experience in this area, it might be better to just take the car to a shop for the install. If you do tackle this yourself, just know that you can do it on a jack and stands, but a lift will make it easier for sure. Like I said before, the mid-pipe is easy enough to install, but the difficult part will be installing the headers. You're going to need your toolbox for the install with an assortment of different sockets, wrenches, and extensions. You're looking at things like disconnecting the steering shaft, removing the motor mounts and dropping the cross member. A lot of this install obviously requires working in some pretty tight areas. While everything is straightforward, getting access and maneuverability in these areas is actually tricky. Having a helping hand in this case is really going to benefit you. At the end of the day I think it's all really worth it. Wrapping this up here, the BBK shorty X-pipe is going to be a must have for anyone that's looking at running BBK's long tube headers. They're aluminized steel. They come either catted or non-catted. They're very affordable when we compare them to other options that are on the site. I'm Stephanie, and for all things Mustang, keep it right here at

      Product Information

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


      • Improves Exhaust Flow and Sound
      • For Use with BBK Long Tube Headers
      • High Flow Catalytic Converters Included
      • 3" Mandrel-Bent Aluminized Tubing
      • Fits 2011-2014 5.0L GT Mustangs


      Increases Overall Performance. Add even more horsepower and torque to the rear wheels of your 5.0 Coyote Mustang with a BBK Catted shorty X pipe. A BBK catted X pipe will greatly improve your pony's exhaust flow to increase overall performance. This BBK x-pipe is specifically designed to be used with BBK's 1633 Series full length headers.

      Race Car Growl. This free flowing BBK x-pipe for the 2011-2014 5.0 Mustang's not only increases power, but it also adds a crisp raspy, race car growl to the sound of your exhaust with its modern "X" crossover pipe design.

      Durable Construction. BBK's X-pipes use a free-flowing 3" diameter CNC mandrel bent aluminized tubing and a merged X crossover to improve flow. And features High flow catalytic converters to provide a significant horsepower increase over the restrictive stock cats.

      Application. This BBK Shorty catted X-Pipe is specifically designed to fit the 2011-2014 5.0L GT Mustangs with BBK Long-Tube Headers installed.

      Technical Note: This BBK product may not be legal for use in emission restrictive states. Check local ordinances.

      Fitment: 2011 2012 2013 2014 Details

      MPN# 1658

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (51)

      Write a Review

      Ratings Summary

      4.4 out of 5 overall rating from 51 customers

      Installation Time: Full Day

      Installation Cost: $500-$1000

      • March 04, 2020

        1 2013 GT - jcamilog Installation Time: Less than 1 Hour

        This pipe rots and cracks

        I bought this x pipe with my long headers, and 4 years later the pipe broke in both sides after the cats. the pipes rot, maybe it is because is not Stainless steel, but the rust ate the pipe's inside wall and now it is thin as pape. Poor quality of materials. Dot buy this for long term use.

        Helpful (0)
      • August 19, 2019

        5 2013 GT - Isaacoo

        BBK catted x-pipe

        Great sound!! Great increase of power!! Price can be a little high but definitely worth it

        Helpful (1)
      • August 13, 2019

        3 2014 GT - Fowler Installation Time: Shop Install Installation Cost: $500-$1000

        Caution to 13-14 Owners

        I don’t have any issues with either the BBK LT Headers or the X pipe. However, any owner of a 13-14 should be aware your O2 Heater and Sensor monitors may NEVER, go ready with this setup. I am currently out of emissions compliance for 6 months now. Different tunes and “emissions” tune, O2 extenders (nonfoulers) of different types. Nothing has worked, at this point I may have to remove all components to pass inspection. I have spoken to NUMEROUS experts, and performed thousands of miles PCM resets and drive cycles. My point, I feel that this information should be included in any AM review or tech data. I would love for this setup to work, it just hasn’t, despite professional installation and tuning support.

        Helpful (1)
      • June 25, 2019

        1 2011 GT - Stang47 Installation Time: Less than 1 Hour

        The cats are clogging up

        The quality was good up until I got everything installed. The cats are clogging up now. They have been installed not even a week and a half and are already giving me problems. The car don’t even get drive but once a week. I never had problems with the car until I installed these now it pops out of the exhaust when you rev up so I had it tested and the laser showed them clogging up. I tried talking to American muscle and since I had them a month even though I didn’t have them put on until a week ago and can prove that they said there is nothing they can do. I paid almost 500 for this mistake

        Helpful (3)
      • June 13, 2019

        5 2011 GT - berad Installation Time: Shop Install Installation Cost: $500-$1000


        way better sound paired up with bbk long tube headers really makes difference

        Helpful (0)
      • May 12, 2019

        5 2013 GT - Kevin Installation Time: Full Day

        LOOK GREAT

        I purchased the x-pipe with the BBK long tube headers and oh boy! my mustang has a new feel to it!! I reccomend

        Helpful (0)
      • May 09, 2019

        5 2014 GT - Jacque Installation Time: Less than 1 Hour

        Sounds as good as the offroad x pipe.

        Had to buy this for my state inspection but I'm not disappointed in the sound or fitment of the part.

        Helpful (0)
      • May 06, 2019

        4 2014 GT - BBKmidpipe Installation Time: Less than 1 Hour

        Breathing free

        The BBK mid pipe is a must if you are installing BBK long tube headers it fit like a glove looks very clean installed you will notice a big difference in the power ban my car pull hard all the way through 1st /4th it will wake up the power in your coyote

        Helpful (0)
      • April 26, 2019

        3 2011 GT - SgtO Installation Time: Afternoon

        Great Cat

        Love the sound, only issue besides the price, is I get back pressure which also negatively affects emissions.

        Helpful (0)
      • April 15, 2019

        5 2013 GT - Randy Installation Time: Less than 1 Hour

        BBK catted x-pipes

        The BBK catted x-pipes sound good. But wish you had the BBK h-pipes

        Helpful (0)

      Questions & Answers (23 answers)

      5 Top Rated Questions

      I live in Texas I have to get a state inspection done. will the Catted pass the state inspection. or will I be ok with the Off road X-pipe?

      • We generally recommend a catted x-pipe as they will usually pass inspections depending on how strict your state is with their emission laws. With that being said, I would recommend contacting a local shop to confirm if your car will pass with a catted or off-road x-pipe as it can vary per state.

      Helpful (1)

      Are these better flowing cats? Do the cats on this X-Pipe better flowing then the stock cats?

      • Yes, these are high flow cats.

      Helpful (1) Show 3 more answers

      Will my engine light come on with these

      • Your engine light shouldn't come on, however, depending on other modifications you have done to your Mustang, there is a small chance that high flow cats like these could turn on that light and require a tune.

      Helpful (0)

      Is this louder than the bbk after Catt x pipe??

      • Yes, this will be louder.

      Helpful (0)

      Will this make my car louder than the bbk after catted x pipe??

      • Since this is with long tube headers, it will be louder.

      Helpful (0)
      10 More Questions
      Will this fit with a borla catback system? 1 answer
      Will this fit on a 2014 mustang with flow tech long tube headers? 1 answer
      Would this fit my stock headers for now and roush axle back ? Planning to get long tube headers and tune after when 1 answer
      Will these pass smog in ca paired with mufflers and long tubes 1 answer
      Will launch control screw up these high flowing cats? I know on regular cats a launch control eventually clogs up the cats but i dont know if it will with high flow. 1 answer
      Will I have problems with my engine light with this bbk cattled x pipe ? 1 answer
      What kind of headers do I need for this set up? What’s the difference between Bbk off-road x pipe and cattled? I have a 2012 mustang GT 5.0 will these fit? And I have the Roush axle back only can this cattled x pipe fits? 1 answer
      What headers do I need for this cattled x pipe? I have Roush axle will this fit 1 answer
      What kind of header do I need for this BBK CATTLED X PIPE??? I have the Roush axle back only will this fit I have a 2012 mustang GT 5.0.? 1 answer
      I leave on New Mexico Albuquerque, will I have issues with this catted x pipe on emission test? What’s the different catted x pipe and off road x pipe ??? 1 answer

      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) Catted X-pipe

      Tech Specs

      Mid Pipe Specifications
      Style Mid Pipe: Shorty "X" Type Headers Required: Long Tube
      Piping Material: Aluminized Steel Piping Size: 3"
      Catalytic Converter: "YES" Fitment: 2011-2014 5.0 GT Mustangs

      Will It Fit My Mustang

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

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