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BBK After-Cat X-Pipe (11-14 GT)

27 Reviews
Our Price

$169.99

  • Item #56108
  • MPN# 1460

  • Market Price $195.49
  • You Save 13% ($25.50)
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Customer Photos
Features
  • Improves Exhaust Flow and Sound
  • Raspy Race Car Growl
  • Reuses Stock Catalytic Converters - Smog Legal
  • 2-3/4" mandrel bent aluminized tubing
  • Fits 2011-2014 GT Mustangs
Description
Increases Overall Performance. Add even more horsepower and torque to the rear wheels of your GT Mustang with a BBK After Cat X-Pipe. A BBK X pipe will greatly improve your pony's exhaust flow to increase overall performance. This BBK x-pipe is designed to be used with BBK's shorty headers or the stock factory manifolds.

Race Car Growl. This free flowing BBK x-pipe for the 2011-2014 GT 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.

Compatible With Stock Cats. The BBK GT X-Pipe bolts up directly behind the stock factory catalytic converters with no cutting required saving you time and money. By reusing your stock catalytic converters you ensure that Mustang is smog-legal.

Durable BBK Construction. BBK's X-pipes use a free-flowing 2-3/4" diameter CNC mandrel bent aluminized tubing and a merged X crossover to improve flow. It also features OEM style hangers that attach in the stock locations for a perfect fit.

Application. This BBK After Cat X-Pipe is designed to be a direct bolt-on for the 2011-2014 5.0L GT Mustangs with either aftermarket short tube headers or the stock factory manifolds and a dual catback exhaust installed. Reuse the stock Catalytic Converters.Installation Note. When installing this X-pipe on a BOSS 302 Mustang you will loose the functionality of the factory Side Exhaust pipes.

Fitment: 2011 2012 2013 2014 Details

Won't fit? Add an exception

What's in the Box
  • (1) After-cat X-Pipe
Installation Info
Tech Specs
Mid Pipe Specifications
Style Mid Pipe: Standard "X" Type Headers Required: Shorty or stock manifolds
Piping Material: Aluminized Steel Piping Size: 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

5/5
Great combo with my Hushpowers

I choose the BBK after cat x-pipe to replace the choked flow of the stock h-pipe, but retain the catalytic converters. The install was straight forward and resulted in a small increase in loudness as well ...

Read More
Helpful (5)

3/5

Top 250 Contributor

BBK X pipe is better the stock mid pipe

When I installed BBK x pipe I already had the Roush axlebacks. The x pipe definetely smoothened out the sound. I can tell the exhaust flowed more freely. There is no crackle at deceleration. Wot doesn't ...

Read More
Helpful (3)

Read All 27 Reviews
Overall Rating 4.4 out of 5 stars

Customer Photos (6) View All Photos

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3 Questions / 5 Answers

Ask a Question

Fitment Will this fit to roush axle backs?

OhhNo50 Year: 2012 Model: GT

  • Yes. This is a direct bolt on replacing the factory H-pipe.

    Best Answer

    Steven65 Year: 2012 Model: GT

    Good Answer (1)

Show 2 more answers Question Resolved

Are these Ca. legal? (C.A.R.B)

Jeff49 Year: 2013 Model: GT

  • Two things to consider in California: 1. Noise 2. Pollution Check with the DMV to see if there is any DB level that is illegal. The other issue is will it pass smog after installation. They are after the Cats so if you do not mess with the cat and it should then pass smog and there is no DB level law that you will violate then you should be fine. Also make sure that they fit. Sometimes you have the 3" vs. the stock 2 3/4" pipe size.

    Tedtuna Year: 2012 Model: GT

    Good Answer (0)

Show 1 more answer Question Resolved

Curious on what the difference between the x-pipe and h-pipe other than the obvious design.

Froggybean Year: 2010 Model: GT

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Customer Reviews (27) Write a Review

Overall Rating 4.4

out of 5 stars

Installation Time:Afternoon

Installation Cost:0-$100

  • Loudness / Volume 4.136364 4.1
  • Exhaust Note 4.545455 4.5
  • Fit & Finish 4.227273 4.2
  • Bang For Your Buck 4.272727 4.3



  • 5/5

    Installation Time: Afternoon

    June 17, 2012

    Great combo with my Hushpowers

    I choose the BBK after cat x-pipe to replace the choked flow of the stock h-pipe, but retain the catalytic converters. The install was straight forward and resulted in a small increase in loudness as well as change in tone that sounds great with my Flowmaster Hushpower axlebacks. Here is a link to what the combination sounds like. http://www.youtube.com/watch?v=61NrIvp_mTA

    scoots

    Year: 2011 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 4 Ohio

    Helpful (5) (0)

  • 3/5

    July 10, 2012

    BBK X pipe is better the stock mid pipe

    When I installed BBK x pipe I already had the Roush axlebacks. The x pipe definetely smoothened out the sound. I can tell the exhaust flowed more freely. There is no crackle at deceleration. Wot doesn't sound as loud. The sound at idle has gotten more agressive. I notice the take off doesn't have as much torque. My guess the hp/tq power band has changed. I'm thinking about Magna flow catbacks to get a louder throatier sound and get a bit more torque. The BBK after cat x pipe is great cost effective way of removing the restricted mid pipe and the fitting is very good. But it toned down the Roush axleback which wasn't something Im looking for. If you are looking for a cost effective way of improving exhaust flow and not sound the BBK x pipe will fit the bill.

    Top 250 Contributor

    Will2IAm

    Year: 2011 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 2 Fletcher, NC

    Helpful (3) (0)

  • 3/5

    March 13, 2011

    Good Product

    Good prodcut it did make the sound and flow better, but i also had to remove the resonators, cause they where blocking all the flow, after that this product with my cat backs is screaming, good bang for the buck, easy to instal to, i did not recieve the clamps with this x pipe, either they got lost with the package or it dont come with clamps,i had to use some of my own.

    Max

    Year: 2011 Model: GT Driving Style: Daily Driver

    Helpful (4) (1)

  • 5/5

    Installation Time: Less than 1 Hour

    October 12, 2014

    Made my coyote come alive!!!!

    Best bang for the buck. Really complements the Gt 500 axle back. Fit and finish were excellent, 25 minute install on a lift. This BBK x-pipe made my 2014 GT come alive!!! Nice mellow tone when cruising around town. And a throaty sound when on the throttle. No rasp or drone at city or highway speeds. Just perfect exhaust note!

    Fox91

    Year: 2014 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 5+ Phoenix, AZ, USA

    Helpful (2) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    March 29, 2013

    Met my expectations perfectly

    I had bought this to smooth out the exhaust note with my Roush axle back. I was getting a very annoying crackling/rasp above 3000rpm or so. Contrary to what people say about X pipes adding rasp, this did the opposite. It completely got rid of the crazy rasp and brought the overall volume down a bit as well. It also reduced the popping under decel a bit. Another benefit was though there was only very slight drone at highway speeds before, with the X pipe it is completely gone. Cruising in 6th gear at 2100rpm the car literally sounds stock on the inside. Oh, fitment was perfect. No issues with lining up the pipes or leaking. Couldn't be happier with this! Car is a 2013 GT, Roush axle backs, resonators deleted. Factory cats still in place.

    Geoff11

    Year: 2013 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Toronto, ON, Canada

    Helpful (2) (0)

  • 5/5

    August 01, 2011

    BBK after cat x pipe

    The x pipe is a much needed improvement over the stock h pipe. As others have noted I had a little trouble with the drivers side but with the suggestion from BBK and pulling the stock pipes a little to the center it fits perfectly and makes my pype bomb axel backs sound amazing. Love this X-Pipe

    francois dandeneau

    Year: 2011 Model: GT Driving Style: Street / Strip

    Helpful (2) (0)

  • 5/5

    July 11, 2011

    BBK X-Pipe

    Was a little reluctant to change out the H for an X as I was unsure that I would like the sound, but I was also not happy with the stepping in sizes that Ford did, so I had no choice. I must say I could not be happier with the sound of the X-Pipe. Install is a bit of a pain to resolve all the leaks, but once done, just WOW! I have my cats hollowed out and no mufflers...and LOVE the way the car sounds now.

    Curtis

    Year: 2011 Model: GT Driving Style: Street / Strip

    Helpful (3) (1)

  • 5/5

    Installation Time: Less than 1 Hour

    July 26, 2014

    Nice product..

    Wanted to change up my exhaust note a little and decided to try an X pipe. Went with the BBK because the price fit my budget. I must say these bolted right up with no issues whatsoever. Took me longer to jack the car up than to install the X. I would recommend this product to anyone!

    OldManRob

    Year: 2014 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 3 Simi Valley, California

    Helpful (1) (0)

  • 3/5

    Installation Time: Less than 1 Hour

    January 19, 2013

    Not impressed with the way the fit !!

    I bought this x-pipe hoping it would seal with the BBK cat delete pipes since i could never get the delete pipes to seal to factory h-pipe. I had no luck with that idea at all,it actually leaks worse. I have had the clamps on and off so many times trying to get them to seal that I finally broke one. BBK truly needs to redesign these products. It's a great idea if you could just get them to seal. Thinking about welding connections but really hate to have to do that.

    Wildstr2

    Year: 2012 Model: GT Driving Style: Street / Strip 'Stangs I have owned: 2 Grove City, OH, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    December 23, 2012

    BBK X pipe

    The finish looks great, welds look great, installation was very easy with an extra set of hands. The only problem we had was a very small leak on the driver side ball connection that was due to being damaged in shipping. Nothing on BBK for this, just had to get it round again and it sealed up great. Definitely a noticeable hp gain. The sound change is noticeable and better in both my wife's and my opinion. We have the Rousch axle back exhaust and the x pipe actually made the idle and cruising quieter, slightly but noticeably less drone. Still plenty loud on cold start and wide open throttle but smoothed out the exhaust pulses. Love it and would buy again.

    satinssleigh

    Year: 2012 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 3 Wyoming, USA

    Helpful (1) (0)

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