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Pypes X-Pipe (11-14 GT)

Market Price $170.99 You Save 9% ($16.00)

$154.99

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  • Item 20119
  • MPN# XFM45

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Features & Details

  • Improves Exhaust Flow and Sound
  • Raspy Race Car Growl
  • 409 Stainless Steel Construction
  • 3" To 2.75" Mandrel-Bent Tubing
  • Reuses Stock Catalytic Converters
  • Reuses Stock Clamps 
  • Fits 2011 to 2014 GT Mustangs
Improves Exhaust Flow. Ford actually did a nice job on the stock Catalytic Converters, but the factory H-Pipe could actually use some improvement. That's where the Pypes X-Pipe comes into play. Designed to balance out the exhaust gas pressure in your system, this X-Pipe reuses the stock Cats saving you money.

Race Car Growl. This free flowing Pypes X-Pipe for the 2011-2014 GT Mustangs not only increases power, but it also adds a loud raspy, race car growl to the sound of your exhaust with its modern "X" crossover pipe design.

Reuses Stock Cats. The Pypes X-Pipe bolts up directly behind the stock catalytic converters with no cutting required saving you time and money. By reusing your stock catalytic converters and stock clamps, you ensure that your Mustang is smog-legal.

Quality Construction. Pypes constructs their Mid Pipes from 3" diameter free-flowing mandrel bent 409 stainless steel tubing and has a reduction in the rear to hook up to your 2.75" factory cat-back. This Mid Pipe features a merged X crossover to increase exhaust flow for a significant improvement in power and sound.

Application. The Pypes X-Pipe is designed to fit the 2011 to 2014 GT Mustangs with either the stock exhaust manifolds or aftermarket shorty style headers installed.

Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (1) After-Cat X-Pipe
Installation Info
Tech Specs
Mid Pipe Specifications
Style Mid Pipe: "X" Type Headers Required: Shorty or Stock Manifolds
Piping Material: 409 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

5/5
Pypes after cat x

Orderd the after cat x pipe fast delivery good quality product. The install took a little less than a hour I did have to cut a 1/2 of an inch off but other than that perfect fitment

Helpful (1)

5/5
Great bang for buck for sound and performance

Ordered on Monday and had on Wednesday. Thanks again AM. I already had the Ford Racing axle back mufflers installed and with X-pipe I don't think it got louder but did get better. Zero drone. It feels ...

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Helpful (1)

Overall Rating 4.6 out of 5 stars
Read All 54 Reviews

Customer Photos (13) Submit Your Photo

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11 Questions / 7 Answers

Ask a Question

Installation I was curious if this would be a direct bolt on with the bassani cat back. I heard you had to weld it. If you don't have to for the bassani 3" cat back I will buy. Thanks!

Alexmach

  • No bud, theoretically, you really don't need to weld any piping on an exhaust system but you should from manifolds/headers to down pipe joints to ensure sparks are sealed. As far as the mid section to the tailpipes, (assuming your sticking to factory pipe I.D.), crank down some good 1/2" pipe clamps over a "slip-on" connection between your mid and rear exhaust system and it should be just fine. However, if you need to transition up or down, let's say 3"-2.75" or 2.5"-3" whatever the case may be, I would recommend welding at least one end of transition closest to your engine and leave other end "open" for easier installation/removal in case you want to switch cat back systems or whatever. Of course, the more solid, the better. Leaks=power loss/possible damage to underside of vehicle. Clamps are great for straight true round pipe......not effective on bends or oblonged piping. The addition you go with past your rear axle.....you can get away with half assing it without any potential danger whether it'd be clamping straight pipes, axle backs, or whatever your heart desires. Even if you try to weld mufflers or straight pipe to your "over axle" connection your still going to have a tiny bit up top where you can't reach your welder and that far back in the exhaust system will not affect anything with a tiny gap in your bead because by then, your pressure is pretty much "through the cycle" and the only thing left for that flow is the noise out of the muffler or pipe. The muffler design is made to create your back pressure needed for performance long before it actually reaches the muffler. It creates kind of an "end cap" pressure builder for the exhaust system and at the same time acts as a pressure relief. Sounds confusing but I'm not too good at explaining without hands on demonstration. I hope this helps and sorry if I went overboard on the subject lol, that's just me bud.....I like to go in depth. Good luck

    jtmarich1985

    Good Answer (8) (0)

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will this fit a borla catback exhaust will buy if it fits a borla catback with stock headeres

Anders

  • Yes I have borla s type axle backs with this xpipe sounds great

    Silverbullet20116

    Good Answer (0) (0)

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will this conect to my pypes supper system will this bolt directly on to my pypes super system?

grabberbluestang

  • Directly, depends on whether or not you have an existing aftermarket midpipe. If it's replacing a stock midpipe, then some custom welding may need to be done to connect it to your catback.

    Robb10

    Good Answer (0) (0)

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Does this bolt on front and back? Or does it need to be welded on? I've read conflicting information in the reviews about what's required to complete the install.

Dan

  • This pipe does not need any welding, it bolts right on in place of the factory H-pipe.

    kgilly

    Good Answer (1) (0)

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Will my car need a tune after installing this product?

Angel

  • NO. You will need a re-tune once you have deleted exhaust components, changed piping diameter, installed a CAI, or modified the intake/throttle body.

    Robb10

    Good Answer (1) (0)

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Will this work with a Roush Axleback?

TyVaow96

  • The Pypes X-Pipe (11-14 GT) will work in conjunction with the Roush Axle-Back Exhaust (11-14 GT, 11-12 GT500) item #69059 (www.americanmuscle.com/roush-axleback-2011gt.html) as the piping for both the Pypes X-Pipe and the Roush Axle-Back Exhaust is 2.75".

    KevinD92

    Good Answer (0) (0)

Question Resolved

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Customer Reviews (54) Write a Review

Overall Rating 4.6

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Loudness / Volume 4.148936 4.1
  • Exhaust Note 4.680851 4.7
  • Fit & Finish 4.446808 4.4
  • Bang For Your Buck 4.744681 4.7



  • 5/5

    Installation Time: Less than 1 Hour

    January 29, 2016

    Pypes after cat x

    Orderd the after cat x pipe fast delivery good quality product. The install took a little less than a hour I did have to cut a 1/2 of an inch off but other than that perfect fitment

    1bad50

    Year: 2014 Heyburn id

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    December 16, 2014

    Great bang for buck for sound and performance

    Ordered on Monday and had on Wednesday. Thanks again AM. I already had the Ford Racing axle back mufflers installed and with X-pipe I don't think it got louder but did get better. Zero drone. It feels quicker with mid 2 gear wheel spin seeming a little easier. Cold air intake, tune, axle back muffler and this X-pipe are a must. Thank you American Muscle once again!

    RonGT

    Year: 2012 Submodel: GT Bethesda, MD, USA

    Helpful (1) (0)

  • 5/5

    August 20, 2011

    X pipe vs H pipe

    Changed my Heartthrob H pipe to this Pypes X pipe. The H pipe gives you a deeper American muscle car sound. The X pipe gives you Nascar sound. For me prefer the Nascar sound. But if you want a deeper American muscle car sound, go for H pipe. The Pypes X pipe is the best buy among X pipe. Installation is easy, took about 30 mins to install by a professional.

    5.0KRZY

    Year: 2011 Submodel: GT

    Helpful (6) (0)

  • 4/5

    Installation Time: Afternoon

    December 08, 2011

    Pypes X-Pipe (11-12 GT)

    ...the installation took less than a hour, the fit and finish is top notch, however these are 3" and the factorys are 2.75", others have chosen to weld after the "X" junction, but this method could be a hassle if you later need to remove the tranny for clutch service if you have the manual. So I took a quarter pound mallet and beveled the 3" tubing to match the factory size and used a clamp, presto! Awecome sound with the cats, not too raspy, great price for stainless steel.

    sportys1

    Year: 2012 Submodel: GT Puerto Rico

    Helpful (5) (1)

  • 5/5

    Installation Time: Afternoon

    April 05, 2012

    Awesome!

    I had my mechanic install the X pipe with a 3" resonator delete to go with my GT500 axle backs. The sound is awesome! Good and quiet at cruise, big growl at WOT and a low rumble at idle, everything I wanted. This x pipe is a quality piece and I highly recommend it!

    Lon49

    Year: 2012 Submodel: GT Phoenix, AZ

    Helpful (3) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    December 26, 2012

    Great X pipe

    this is a great x pipe gives you a raspy sound. i got mine with roush axle back and absolutely love them. great product

    SterlingGrayGT

    Year: 2013 Submodel: GT Amarillo, TX, USA

    Helpful (2) (0)

  • 5/5

    July 05, 2011

    X Pipe

    Good x pipe. Splices right into the mid pipe, one end re uses the stock clamps and the other end has to be welded in. Sounds great.

    Zach

    Year: 2011 Submodel: GT

    Helpful (2) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    July 21, 2012

    Great product for the price

    I bought this x hoping to improve the sound of the car and I go much more that I bargained for. I couldn't be happier. I have Roush axle backs installed and I feel this part really woke the exhaust note up. The exhaust has a nice deep rumble at an idle, quiet at a cruise on the express way, and screams like crazy under heavy acceleration. The Pipe does have to be installed by a shop because it does need to be welded on. The stock exhaust on the 2011 is 2 3/4 inch and the x pipe is 3. I suppose you could find an adapter and clamp in it place but I opted for the welding. It cost 130 at a local shop and they were done in about an hour. This really is a great piece for the price and is a great addition to your exhaust.

    Vans5oh

    Year: 2011 Submodel: GT Chicago, IL

    Helpful (3) (1)

  • 4/5

    Installation Time: Afternoon

    November 24, 2015

    Great budget x pipe

    I had some worries on quality from other reviews but gave it a shot anyway. Took a week to arive and opened it to inspect and found one of the bell ends that goes to the cat had split when they manufactured it. They tig welded the split and ground it down and did a poor job. Should have never been repaired. AM sent a replacement overnight and it was perfect. Fit is spot on. No leaks. Install is straight forward and the factory clamps at the cats are a pain although if you have the right star socket the threaded ends are cut for one. I have the roush axle back and liked them but did not like the upper rpms as the exhaust note tends to get a more old school straight duals choppy note. The x has transformed the exhaust into a smooth howling note across the rpm range. The sound is wicked! Interior sound level is lessened and the deceleration popping is greatly reduced. Performance has changed but not confirmed on a dyno. Car is much more lively with added traction loss as an indicator. These after cat x pipes may not effect overall hp a torque numbers but they must change the curve. I noticed a difference for sure. Overall very happy with the bang for the buck and the awesome sound with added performance for 160 bucks!

    BigJay

    Year: 2014 Submodel: GT Seattle

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    June 05, 2015

    X-Pipe Install

    I installed the x-pipe yesterday and this fit perfect and would have taken under an hour but I had to cut the existing ball/socket clamps off in order to get the factory H-pipe off of my 2011 Mustang GT. The factory clamps had the bolt head at the top of the clamp near my floor boards and side rails and i had no access for a 13mm wrench. I ordered 2 new clamps online for $19 so they came in very handy. The only issue I had was very minor exhaust leaks based on how tight I made the clamps but after driving it for awhile they should seal up and I will retighten the clamps after 50-100 miles as recommended by the manufacturer. Overall, the fit was perfect and no welding is necessary. The price is great for the purchase of an x-pipe. The only down side is that it made my mustang a bit quieter and I have GT500 axle back mufflers but it is a lower deeper tone now. Great product/great price and perfect fit.

    kgilly

    Year: 2011 Submodel: GT Pittsburgh, Pa

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    January 12, 2014

    Really Nice.

    I have a 2014 gt with the outlaw axel back exhausts and this X pipe. When I first installed this I was really excited. It was a simple and quick install. I put my axel back on first and started the car to see how it would sound with out the off road x. It was loud but I wanted more. So I installed this X pipe once it cooled down and it made a big difference. It sounds amazing. It's loud and sounds very throaty and deep. But again I wanted more! I then did a resonator delete. I LOVE THE SOUND. It's really loud and just sounds amazing. Simply bliss. Couldn't be happier. My neighbor has a 14 gt as well and he has the gt500 Axel backs with a bbk x pipe. We both agree my car sounds better, and louder. I recommend this set up of you are keeping your cats and stock headers and still want a loud aggressive exhaust.

    Robsteezy

    Year: 2014 Submodel: GT Sacramento, CA, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    September 08, 2013

    Great Sound, Awesome Price

    I have this paired with the pype bomb catback system and it sounds amazing. I could not be happier with the sound and at just over $100 you can't beat that. So worth it.

    PJR10

    Year: 2014 Submodel: GT Gastonia, NC, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    September 06, 2013

    Pypes X pipe

    I received my Pypes X pipe 4 days after ordering and had it professionally installed on my 2011 GT by a local muffler shop in about an hour and half. The tech had little or no problems installing the X pipe and utilized the factory clamps, both front and rear. No welding was necessary. The X pipe compliments my Magnaflow American Thunder, axle back mufflers. There is a deeper rumble at idle and under moderate acceleration the exhaust note transforms into more of the NASCAR sound. The next step is to get some 3" resonator deletes. That should really make the exhaust on my GT scream!

    Clemmy

    Year: 2011 Submodel: GT Westborough, MA, USA

    Helpful (1) (0)

  • 5/5

    July 28, 2011

    x-pipe

    It's good for the price. The front will bolt right in. The rear will need to be welded if you have the stock over axle.

    Matt

    Year: 2011 Submodel: GT

    Helpful (2) (1)

  • 5/5

    Installation Time: Less than 1 Hour

    October 05, 2013

    Pretty good

    All in all this took my guy about 45 min to install. He said the biggest pain was the bolts on the cat converters because theyre hard to access. I have SLP loudmouths on mine and the addition of the xpype feels like it made it quieter. Also I read 85 different reviews that said you would have to weld part of it. You do not.. the fitment is fine.

    dbowman

    Year: 2011 Submodel: GT

    Helpful (1) (1)

  • 5/5

    Installation Time: Less than 1 Hour

    April 26, 2013

    1 Hung Pony

    Went on easy dont know if it changed the exhaust note as it was installed with new exhaust too.

    1HungPony

    Year: 2013 Submodel: GT Wisconsin, USA

    Helpful (1) (1)

  • 3/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    July 05, 2012

    short on one end

    we had to add about 11/2" on the header end to enable weldeing

    drifter

    Year: 2011 Submodel: GT

    Helpful (1) (1)

  • 5/5

    Installation Time: Less than 1 Hour

    December 11, 2011

    GREAT!

    i was very happy with this product. like the other reviews said, the back has to be welded in but i am very happy with the sound this x pipe produces

    MattD

    Year: 2011 Submodel: GT Fort Mill, SC

    Helpful (1) (1)

  • 4/5

    Installation Time: Less than 1 Hour

    December 08, 2011

    pypes x

    The x is well made and easy to install. If you have an aftermarket 3 inch exhaust it will bolt right up. I welded mine in on the back side because I'm still using the stock over axle pipes. The front bolts right up. Sounds good, I'm considering the pypes long tubes now.

    MattG

    Year: 2011 Submodel: GT CA

    Helpful (1) (1)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    May 02, 2012

    Great price for a quality piece

    Had a shop install this piece for me along with resonator deletes. The piping and the welds are great and really brings the exhaust to life, the stock h pipe is weak to say the least. Very happy with this purchase.

    SlinkC

    Year: 2012 Submodel: GT Bryan, TX, USA

    Helpful (1) (2)

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