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Pypes Off-Road H-Pipe (11-14 GT)

Market Price $339.99 You Save 9% ($31.00)

$308.99 (each)

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  • Item 100794
  • MPN# HFM24

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Features, Videos & Details

  • Improves Exhaust Flow and Sound
  • Classic Muscle Car Rumble
  • 304 Stainless Steel Construction
  • 3" Mandrel-Bent Tubing
  • For Off-Road, Track Use
  • Fits 2011 to 2014 GT Mustangs

Review & Installation Video

Improves Exhaust Flow. Add even more horsepower and torque to your coyote powered Mustang by eliminating those power robbing factory catalytic converters with a brand new Pypes Off-Road H-Pipe. The Pypes off-road H-Pipe will significantly improve your Mustang's exhaust flow for a notable increase in horsepower and torque.

Muscle Car Rumble. This free flowing Pypes H-Pipe for the 2011-2014 GT Mustang's not only increases power, but it also adds a deep muscle car rumble to the sound of your exhaust with its classic "H" crossover pipe design.

Quality Construction. Pypes constructs their Mid Pipes from 3" diameter free-flowing mandrel bent 16 gauge 304 stainless steel tubing, that features a classic H crossover to increase exhaust flow for a significant improvement in power and sound.

Application. This Pypes Off-Road H-Pipe is designed to be a direct bolt-on for the 2011-2014 5.0L V8 GT Mustangs with either aftermarket shorty headers or the factory manifolds installed. Intended for off-road track use only.

Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (1) Off-road H-Pipe
Installation Info
Tech Specs
Mid Pipe Specifications
Style Mid Pipe: Standard length "H" Type Headers Required: Shorty or Stock Manifolds
Piping Material: 304 Stainless Steel Piping Size: 3"
Catalytic Converter: "No" - For off-road use only Fitment: 2011-2014 GT Mustangs
Will it fit my Mustang?
  • GT - 11, 12, 13, 14

Most Helpful Reviews

5/5
SO LOUD

This will give you more than you could imagine in volume. I knew it would be louder. But my God this thing can be heard from the next state over lol

Helpful (1)

5/5
Provides A Deeper Tone

I have been trying to achive a deeper tone with my mustang. I am currently running the pypes super cat back. It is too raspy for me and i was looking for something to bring the deep tone back to it. This ...

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Helpful (1)

Overall Rating 4.6 out of 5 stars
Read All 33 Reviews

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17 Questions / 13 Answers

Ask a Question

How much more horsepower? The description states that this will "add even more horsepower and torque to your Coyote powered Mustang..." I was just wondering how much more you could expect from an otherwise stock GT?

AndrewDG

  • Probably not much without a proper aftermarket tune. Having a tune made to take advantage of the freer flowing exhaust will add a good bit. I had my tune adjusted so it was ready when I installed it and I can tell a definite difference.

    RazorbackMustang

    Good Answer (1) (0)

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Will this fit the Pypes super system? Will this bolt right up to the Pypes super system? The paper work that comes with the cat-back says additional hardware is required for a 3" mid pipe install.

Matt93

  • I have the pype bomb cat back and it bolts straight up. Just used the factory band clamp and worked fine for me.

    DESTROMINATOR

    Good Answer (2) (0)

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Long tube headers? Will these fit with the Pypes Long Tube Headers?

Dfink114

  • you would need a shorty h or x pype on or off road because of the long tube headers extra length.

    03GTUSN

    Good Answer (1) (0)

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kooks long tube headers? this is probably a stupid question but can these work with the kooks 1 7/8 long tubes? i can't find a kooks off road h pipe anywhere so i need to find something else that isn't an x pipe

Alex3209

  • That is not a stupid question. Kooks headers need their own H or X pipe as they end slightly up from where many other headers terminate. Look around on the web if American Muscle can't get one. They do exist.

    BULLITT09

    Good Answer (1) (0)

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Tune Required After Install? Would a Tune be required after this install?

STANGBOSS

  • It is highly recommended to get the most performance gains. Removing the cats will have much higher airflow. Your check engine light will also be on after removing your cats so you can also have that turned off with a tuning.

    Stangnado

    Good Answer (4) (0)

Show 3 more answers Question Resolved

Have you heard of any issues from customers about this particular H-pipe not sealing correctly?

Lodge

  • There should not be any issues with the Pypes Off-Road H-Pipe (11-14 GT) sealing correctly. If you are having any installation issues, we recommend taking it to a shop and having them install it. A Mid Pipe can be difficult to install properly without a lift and that may be why it isn't sealing properly.

    AshleyK

    Good Answer (0) (0)

Question Resolved

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Customer Reviews (33) Write a Review

Overall Rating 4.6

out of 5 stars

Installation Time:Full Day

Installation Cost:$100-$250

  • Loudness / Volume 4.84375 4.8
  • Exhaust Note 4.84375 4.8
  • Fit & Finish 4.40625 4.4
  • Bang For Your Buck 4.6875 4.7



  • 5/5

    Installation Time: Afternoon

    October 05, 2016

    Bang for your buck

    The product seems to be very good quality (materials, and construction) especially for the money. Everything fit pretty good, definitely room for improvement but not very much, I didn't like how the passenger side pipe was angled after install, and the H-Pipe could be a 1/2" longer. Other than that, looks and performs very well. Absolutely and un-Godly loud, especially if you already have Roush mufflers like me, or similar loud mufflers. Just an absolute thunder at full throttle especially after 2,000RPM. Just be prepared that's all I'm saying. No drone inside the car, you can hear the exhaust, but there isn't any discomfort or drone.

    Serg

    Year: 2014 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    September 19, 2016

    DON'T HESITATE ON THIS PURCHASE!

    It's a complete change! It's got that deep rumble that you need! Get rid of those cats and let your Mustang exhaust those deep breaths! Matched with CandL cold air intake and Boss302 intake manifold. This is the perfect add on for my car! Do it!!!

    jefant

    Year: 2013 Submodel: GT

    Helpful (1) (0)

  • 4/5

    August 02, 2016

    Impressive

    I purchased the Borla Atak exhaust first to improve the sound of my 2012 gt and it did just that. The sound was just want I wanted at first but like anything else you get used to it and eventually want more. After deciding to go louder I purchased the pypes off-road h--pipe and it did just that. If you want you exhaust to be loud enough to wake up the neighbors and scare small children then don't hesitate and purchase this item.

    Lodge

    Year: 2012 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    June 27, 2016

    Couldn't be happier

    Just what I was looking for. Love the sound and nice power increase. Definitely increased throttle response.

    Emantrucking

    Year: 2012 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    May 30, 2016

    These go to 11

    Why not just make 10 louder? Because these go to 11... Depending on your muffler (or lack thereof) these will do wonders for the sound of your coyote. The first impression of this h pipe is "these are going to move some air" and they do just that. I have a custom muffler delete and this combo is just too loud. Drone is tolerable on the highways, but accelerating and WOT these will produce a headache. I ended up having a local mustang shop install these for $125. The install is easy enough, but you'll need an impact wrench for the drivers side. Overall I love these, I waited a while for them to come back in stock. After some trouble getting them shipped out AM helped me out big time and had it shipped to me straight from Pypes. Much thanks to AM and Pypes!

    Pickle

    Year: 2011 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    April 19, 2016

    MAKES YOUR COYOTE A MONSTER

    After doing a lot of research on an O/R H or an O/R X i knew the H was the one. On a mustang I believe the h sounds better because the muscle car sound. All I was running was a hooker axle back system and it wasnt doing the job, after installing the o/r h I turned by car on and boy was I happy. Out of the four screws two were really rusty so I had to break those off. I spend more time getting the screws that attach to the heads off than I did installing the whole H pipe. I`m very pleased with the sound. On a low rpm from 2500-3k it sounds quite but after you hit the gas it transforms! A buddy of mine has his coyote straight piped and I thought that sounded good but it was a little annoying. He heard my car and ordered an o/r h pipe that same day.

    Sinaloa

    Year: 2012 Submodel: GT

    Helpful (1) (0)

  • 4/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    April 19, 2016

    Sounds really loud. Gain about 10 RWHP.

    Top speed on 1/4 miles increased from 109 to 112 after install the o/r H pipe. It's just too loud for a daily driver. Also, cat delete is going to make your car smells terrible. If you drive a convertible, I don't recommend it. If you want to improve your 1/4 miles time, I strongly recommend it.

    YiZhang

    Year: 2014 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    March 24, 2016

    2013 GTHIG Mustang GT

    I recently purchased this off road H pipe for my 2013 Got To Have It Green GT. First of all I ordered on Wed and received on Fri. Great shipping! I decided to install myself and my son. The car has about 22k miles on it. We did it in my garage with no lift. The hardest thing during the install was removing the OEM nuts off of the manifold / cat connection. After breaking a swivel and two 15mm sockets, they are Craftsman, we finally got them off. Like the video says, they are a real PITA. The quality of the kit is very good. I have Roush axle back mufflers already installed. Under acceleration the car sounds sweet, at cruising speed no drone and you can hold a conversation with your passenger. I have had other cars that you could not. I will be doing a custom tune in the near future.

    ohioron13

    Year: 2013 Submodel: GT

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    December 17, 2015

    Pypes Off-Road H-Pipe

    This is the sound I was looking for!! Install was a piece of cake. Definitely need another set of hands, especially if working under jack stands. Running this off road H-pipe with Flowmaster Outlaws and it sounds amazing! I can't imagine what it will sound like after I get headers on her. Deep rumble that will wake the neighbors at 5 am. Throttle response improved, I really have nothing bad to say!

    Filzgt1

    Year: 2014 Submodel: GT Holloman Air Force Base, NM

    Helpful (1) (0)

  • 3/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    May 14, 2015

    LOUD

    I had these put on with pype bomb axle back, and it's crazy loud. I attempted to install myself but could not get the factory clamps that you have to use to stop leaking. Had a shop do both items for 100 bucks. I recommend a shop install unless you have a lift and or very mechanically inclined

    jon

    Year: 2014 Submodel: GT rock hill, sc

    Helpful (1) (0)

  • 4/5

    Installation Time: Afternoon

    September 24, 2014

    Mostly painless!

    The install actually went quite well. The instructions were very clear (even though it's a touch of a no-brainer). Finish of the pieces was impressive. I was a little disappointed to see only Grade 5 hardware was included for header-to-H pipe attachment. Grade 8 would be preferable as Grade 5 hardware tends to not last as long in that location. As far as fit, it's mostly good. I don't know if the fitting of my axle back has caused some misalignment or if the H pipe just needs a little tweaking. I couldn't get the passenger side downpipe to midpipe connection to line up very well. Therefore it leaks pretty badly. This is all due in part to the HORRIBLE factory band clamps (I miss the flanges of a new edge!). My solution is to have it welded. The sound is great! Much fuller tone, much more volume, and a beautiful rumble at idle now. Install and enjoy!

    RazorbackMustang

    Year: 2011 Submodel: GT Arkansas

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    August 27, 2014

    Provides A Deeper Tone

    I have been trying to achive a deeper tone with my mustang. I am currently running the pypes super cat back. It is too raspy for me and i was looking for something to bring the deep tone back to it. This did a good job and changing the tone but still its too raspy for me (but that is the pype bomb exhaust i have). The whole time took me about 2 hours. It took about 1 hour to get my car up high enough to get to the stock H pipe. But once i go that, only about 45 min or so to get the old one out and new one in. Bang for my buck for me is only a 3/5 because i live in CA - so i didnt install the cat deletes (not yet). It would be nice if they sold the deletes and the H-pipe separate for this type of situation.

    DESTROMINATOR

    Year: 2014 Submodel: GT Los Gatos, CA, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Less than 1 Hour

    July 19, 2014

    SO LOUD

    This will give you more than you could imagine in volume. I knew it would be louder. But my God this thing can be heard from the next state over lol

    christopherm1856

    Year: 2014 Submodel: GT Fort Worth, TX, USA

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    February 21, 2014

    Perfect

    Sounds just like I hoped it would. Got this and Pypes Pype Bombs together. You will definitely KNOW when I head down your street. Couldn't decide between X or H and am glad I went with H pipe

    NaplesStang

    Year: 2013 Submodel: GT Naples, FL

    Helpful (4) (0)

  • 5/5

    Installation Time: Afternoon

    January 11, 2014

    This in an awesome offroad H...

    First, i was a bit leery about purchasing this without more feedback. However, the first set of cat backs I had were Pypes, and they were good quality, so I rolled the dice. Installed these without help on jack stands. Header-to-cat bolts are 15mm, one on each side accessible from the top, the other accessible from underneath. The nuts on top required a 24" extension and a 24" breaker bar to pop loose (keep in mind, this car has less than 11k on it). That was the only difficult thing with this install. All welds were of great quality. Pipe bends were top notch and everything fit perfectly. The instructions called for cutting the claps from the factory H, so not sure why the previous reviewer took issue with it. Great sound, very similar now to a pushrod 302, when coupled (at least) by my Roush catback. Highly recommended.

    Vettekilr

    Year: 2013 Submodel: GT NC

    Helpful (2) (0)

  • 4/5

    Installation Time: Shop Install

    Installation Cost: 0-$100

    December 11, 2013

    Enhanced my Roush axleback exhaust!

    One issue during install. The 2 factory clamps that are to be used after bolting the upper section to the manifold are welded to the factory exhaust. The shop that did my install gave me the option to have them removed and tack welded to the new h pipe or they would weld the new parts together. Thats why I only gave 3 stars for fit and finish (otherewise fit and finish were superb)!

    srlewis76

    Year: 2014 Submodel: GT South Carolina

    Helpful (2) (0)

  • 5/5

    Installation Time: Full Day

    January 02, 2016

    Worth every penny! Here are some install tips..

    Let me start off by saying I could not be happier with this H pipe. It looks beautiful, it fits perfect and it sounds amazing. I always liked the rumble of an H pipe over an X pipe, and this does not disappoint. I only had a set of GT500 mufflers, and this system unleased the beast in my mustang. What I like most about it, is I am not looking for an exhaust that wakes up the neighbors, but I want something that lets people know that a mustang is coming, and that's exactly what this does. With that in mind I have some tips: First, I called several shops, both chains and small shops, and I couldn't find any that would delete the cats for me. They all are worried about the EPA, so if you buy this, plan on installing it yourself. Second, as mentioned in the install instructions, make sure you have some penetrating oil, and make sure it is stronger than WD-40. I tried that first and ended up going and getting some liquid wrench because those rusted bolts would not budge otherwise. Even with the liquid wrench, plan on working to get those bolts loosened. I had a 1/2 inch socket wrench with about 30 inches of extensions on it, and that took every ounce of strength I had to break those suckers loose from the top. Then breaking the other two loose from the bottom, I used a crescent wrench, and hooked another one on to use as a breaker bar. I found that worked quite well. Third, having the right tools can make things go a lot faster. You will need a 15mm socket for the stock bolts going from the down pipes to the exhaust manifold, as well as for the clamps going from the stock H pipe to the mid pipes. You will also need a 13mm socket for the clamps going from the down pipes to the H pipe. When you switch over to the Pypes set up, the conecting bolts from the exhaust manifold are going to be a 9/16 size, and make sure you have a wrench too so that you can hold one side of the bolts while you tighten the nuts. And finally, when you are installing the new pipes, use a floor jack and a piece of wood to lift up your mid pipes that are hanging down. It is dang difficult to try and hold everything level, while tightening it down. I tried it the first time without doing that and ended up with exhaust leaks out of every break in the pipes because the whole system was sagging. The next day I loosened everything, and when I lifted up the mid pipes I could just see everything line up and fit better. I apologize for rambling on, but I made a fair amount of mistakes that led to this being a much longer process than necessary. Hopefully this helps you avoid some of the same ones I made.

    Andy

    Year: 2014 Submodel: GT The Woodlands, TX

    Helpful (1) (0)

  • 5/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    October 21, 2015

    1 word: obnoxious

    That's all that can really be said about these. being as they're a "O/R" application, in which the cat's are deleted, this simply opens the pipes up to scream. I have a friend who also has high flow cats, they get the same response, very very similar, in terms of loudness. He actually has exhaust on his, where I have a straight pipe and our cars sound near similar. I have a slightly lower tone growl, I believe because he has an X-pipe. If you're looking for a louder car that sounds like you're ready to go, you need this (or other O/R application) or a set of High Flow cats to go with your setup.

    Woolly

    Year: 2013 Submodel: GT Ira, MI

    Helpful (1) (0)

  • 4/5

    Installation Time: Afternoon

    July 07, 2015

    Get this if you can't decide between H or X

    I bought the car with a pypes x-pipe. Sounded really raspy. Switched to the H-pipe and wow was I satisfied with the sound difference. Not sure if there was any performance difference or not but the sound.... YES. If you are deciding between x and h think "raspy rat rod" vs "v8 truck" respectively. Choose whichever you like but there WILL be a difference in sound. It still seems to pull hard all the way up so I really don't think there is a noticeable performance difference between the two configurations. Possibly on paper, but it's not felt, at least not for me. The pipes change color after a while and looks ugly but it is underneath the car so it really doesn't matter. I recommend the h-pipe personally. It is loud, aggressive, and more of that deep v8 sound. Well worth the money. Highly recommend.

    Durkmusic

    Year: 2010 Submodel: GT Myrtle Beach, SC

    Helpful (1) (0)

  • 5/5

    Installation Time: Afternoon

    February 17, 2015

    Amazing !

    I took it to the shop as I was injured and couldn't work on it myself and it took them about an hour to install. After the install I turned the car on and I could already tell there was a different rumble to it. It was a deep throaty sound and I liked it. Started driving it around and the loudness and aggressive sound caught me off guard. Great product and great sound. I love it

    GorM

    Year: 2013 Submodel: GT SAN JOSE, CA

    Helpful (1) (0)

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