Win A 2018 RTR Spec 3 Mustang Enter Now!
Talk to a Mustang Expert
1-888-332-7930
Mon - Sun, 8:30 AM EST - 11:00 PM EST

3 More Days for Free Shipping! Get it by Dec 24th available on most items - Details

Pypes Off-Road Cat Delete Pipes - Stainless Steel (11-14 GT; 12-13 BOSS 302)

Market Price $187.99 You Save 12% ($23.00)
Our Price

$164.99

FREE Shipping
  • Item 102021
  • MPN# DFM76

In Stock Ships same business day. Choose options to add to cart

Features, Video & Details

  • Improves Exhaust Flow for More Power
  • Deletes Catalytic Converters
  • Mandrel-Bent Construction
  • 3" 409 Stainless Steel Tubing
  • Pre-Installed Oxygen Sensor Bungs
  • Intended for Off-Road Use Only
  • Fits 2011-2014 GT and BOSS Mustangs

Review & Installation Video

Review & Install Video

Hey guys, Justin with americanmuscle.com here with my detailed review of the Pypes off-road cat delete pipes available for your 2011 through 2014 Boss and GT Mustang. In this review, I'm going to cover what you can expect as far as benefits when installing a cat delete system like this from Pypes, what you're going to be looking at as far as basic materials, and then a quick little walkthrough on the install itself. While the install is pretty basic in principle, you're looking at two bolts here at the flange, a basic clamp on the midpipe section, there is a little bit of work involved here, guys. Most of it is done underneath the car with a little bit of work through the engine bay. So, I'm going to stretch this one up to a two out of three on the difficulty meter. We'll talk a little bit more about that later on. You should be checking out this system from Pypes if you're looking to increase both the power and the sound in your Coyote-powered Boss or GT Mustang and you're still working with the factory manifolds or an aftermarket set of shorty headers. This is very important to point out, guys, because obviously these things will not work with a set of long tube headers. With that said, however, this would be a good alternative to you guys at home who might be thinking about long tube headers but maybe don't have the money in the budget at this time or don't have the means to install them. With that said, let's get a little further into this system from Pypes. Pypes has a reputation within the industry here to produce some very budget-friendly stuff with the goal of increasing your sound without totally wrecking your budget in the process. These things fall right in line with that. I would categorize these Pypes deletes or cat deletes as a more entry level or value option. With that said, they're going to perform as intended. They have a very favorable rating on the site, and the customer reviews are all pretty awesome. Check them out if you haven't done so already. The factory catalytic converter certainly served their purpose, however they can be a performance and sound killer on your GT or Boss build. Uncorking those factory cats using Pypes' delete system here will not only increase the overall volume and just aggressiveness of your exhaust tone, but you can also look forward to a little bit more power as well thanks to the less restrictive flow. Yes, you can run this system from Pypes without a custom tune, but honestly, guys, you're going to want to pair this thing up with a custom tune. The reason is twofold. First and foremost, you're going to squeeze out a little bit more power along with that custom tune and the cat delete system here from Pypes. In addition to that, you're also going to be able to turn off that check engine light that's ultimately going to say hi to you as soon as you delete those cats. As far as your basic construction, you're looking at 16-gauge 409 grade stainless steel throughout here, guys, 3-inch mandrel bent from tip to tip, factory style connection, 2-bolt flange here at the manifold side, ball and socket style flange at the midpipe side. They do include two pre-welded O2 bungs here. The welds don't look half bad honestly for being a value system. They're even throwing in some brand-new hardware and two clamps for you. I did touch on fitment a little earlier in this video, but I do want to spend a little bit more time on that, guys, because I just want to clear up any confusion and make sure you're ordering the right part. I want to make sure this thing is going to fit your ride. First and foremost, for your header or manifold side, this thing, again, will only fit a factory shorty manifold or your factory header or an additional aftermarket shorty header without issue. As far as the midpipe side of things, well, again, this kit will fit with your stock midpipe without issue or any aftermarket stock length midpipe. X or H pipe, it really doesn't matter here. In my experience, guys, sticking with the same manufacturer for these parts, whether it be the cat deletes and your midpipe, will only result in the best fitment. In this case, you might want to check out the Pypes stock length midpipes. They do offer both an X and an H pipe here on the site. Again, we do have some other options as well. But take my advice, stick with the Pypes stuff, you'll get some good fitment. Finally, I just want to remind you again these will not work with any aftermarket long tubes out there. I know it might be pretty obvious to most of you guys at home, but if you didn't know, now you do. Perhaps one of the best things about this kit here from Pypes is the price, guys. I mentioned it earlier. I'll mention it again. Pypes, as a brand, they're generally one of your more entry-level or budget-friendly brands out there. That's certainly the case here with this system. Looking right around 150 bucks for the cat deletes, which seems reasonable given the materials you have here. Honestly, that's going to peg the bang-for-your-buck-o-meter, at least in my opinion here guys, because you're getting a whole bunch more sound. You're getting a little bit more performance out of adding this kit, but again for not a whole lot of dough. I do want to quickly mention as well, guys, if you don't have one of those midpipes we talked about a little bit earlier, one of those aftermarket midpipes, Pypes does offer a combo kit that pairs up the cat deletes here with a stock length X or H pipe that we talked about a little bit earlier. The pricing is still very reasonable for the combo kit. In fact, it's the way I went when I first got my GT. I went with their off-road H pipe system, and I couldn't have been happier with the results. Switching gears, let's touch on the install. Obviously, much easier than a set of long tube headers, right? That goes without saying. But there still is a fair amount of work involved here, so I'm going to go middle of the road, two out of three wrenches on my difficulty meter, maybe a couple of hours from start to finish to get these guys installed. As far as tools, you're looking at a few metric sockets, a bunch of extension because there are a few bolts you'll need to hit through the engine bay there, and maybe a can of your favorite penetrating oil in case you run into some rusty bolts. Obviously, most of your work is done underneath the car here, guys, so jack and jack stands would suffice. But a lift would be ideal. I did talk about that penetrating oil a little earlier. That will just come in handy again if you live in a snowy or salty area. Those bolts might be a little tough to get off. If the WD-40 or your PB Blast doesn't cut it, try a little heat because that will ultimately be your best bet with removing stubborn exhaust bolts. Going even further, guys, it might not even be a bad idea to have a little tube of high-temp RTV on hand. Because you shouldn't need it, but if you do encounter a small leak at the midpipe connection, you'll certainly be thankful you have it. All right, guys, at the end of the day here this is a great bang for your buck mod that I've had installed on my very own car with great results. If you're not willing or ready to fork out the dough for a set of long tubes or tackling the rather difficult install that goes along with them, this is a great compromise that will give you some good sound and power improvements. They're going to be a lot easier on your wallet compared to those long tubes. And they're certainly going to be a lot easier to install as well. That's my review of the Pypes cat delete system which you can find right here at americanmuscle.com.

Improves Performance. Add even more horsepower and torque to the rear wheels of your Coyote powered Mustang by eliminating those power robbing catalytic converters with a Pypes Off-Road Cat Delete Kit. Pypes Off-Road Cat Delete Pipes will greatly improve your pony's exhaust flow to improve your Pony's overall performance.

Durable Stainless Steel Construction. Manufactured from free-flowing CNC mandrel bent 16 gauge 3" 409 stainless steel tubing, these Pype catalytic converter delete pipes feature pre-installed oxygen sensor bungs and all the required fasteners for installation.

Application. This Pypes Cat Delete Kit is designed to be used on the 2011-2014 5.0L GT and BOSS Mustangs with either the factory manifolds or aftermarket short tube headers installed.

Technical Note. Not legal for use on pollution controlled motor vehicles; intended for off-road use only.

Fitment: 2011 2012 2013 2014 Details

What's in the Box
  • (2) Cat Delete Pipes
Installation Info
Tech Specs
Will it fit my Mustang?
  • GT - 11, 12, 13, 14
  • Boss 302 - 12, 13

People Who Bought This Item Also Bought

Most Helpful Reviews

1/5
Will NOT work with a stock h-pipe

I'm only giving this 1 star because it was advertised as being able to work with the stock h-pipe, and it will NOT. Other reviewers have said the same thing and I should have listened. To make this work ...

Read More
Helpful (3)

5/5
Growl

Nice sound,not to loud or raspy,just enough to make it sound mean,perfect fit,went on in no time at all...very happy.

Helpful (2)

Overall Rating 3.4 out of 5 stars
Read All 74 Reviews

Customer Photos (7) Submit Your Photo

View All 7 Photos

You Might Also Like

12 Questions / 7 Answers

Ask a Question

Is there any cutting, or welding involved in the intall? Thanks

ErickF

  • No, no cutting or welding is involved when performing the install on the cat delte pipes.

    AMjordan

Show 1 more answer Helpful (1)

Would I need to order new gaskets ? Or don't use any?

Bones

  • When installing the Pypes Off-Road Cat Delete Pipes, you can reuse the existing gaskets if they are still in good condition, or you can purchase new gaskets from a local Ford dealer or local auto parts store. Typically the gaskets can be reused with no issues due to their design.

    Rob D

Helpful (0)

Will this fit with 1-7/8 kook shorty headers and 3 in magnaflow true x pipe?

Bones

  • We do not see any issues with this cat delete working with your set up since these are 3" and your mid-pipe is also 3".

    Ricky36

Helpful (0)

my name is hugo ochoa, my engine ight came on after the installation ,can i use my SCT tuner to get the engine light off or do i have to take it to a tunner shop?

hugoochoa

  • When deleting your stock cats your check engine light will come on if you do not have a tune. If you have custom tunes with the SCT device you will just need to get an updated tune for these.

    Ricky36

Helpful (0)

Where do I get a tune to run these on my car without throwing any codes or mechanical issues?

ClintB

  • You can get the Bama X4/SF4 Power Flash Tuner w/ 2 Custom Tunes (11-14 GT, 12-13 BOSS), item # 101200G11, (http://www.americanmuscle.com/x4-custom-tuner-2011gt.html). This tuner will come with 2 custom tunes that will be made just for your car. This will adjust the car to any mods that you have made. Also, if you ever make any other mods to the car, you can request a free tune as well.

    AshleyK

Helpful (0)

will these work with Heartthrob Flowpack Cat-to-Axle X-Pipe Kit? i cant seem to find an after x-pipe kit with mid mufflers or resonators from Pipes

EddieS

  • The Heartthrob Straight Pipe Cat-to-Axle X-Pipe Kit would be compatible with the Pypes Off-Road Cat Delete Pipes.

    Rob D

Helpful (0)

More Products You Might Like

Customer Reviews (74) Write a Review

Overall Rating 3.4

out of 5 stars

Installation Time:Afternoon

Installation Cost:$100-$250

  • Loudness / Volume 4.565217 4.6
  • Exhaust Note 4.376812 4.4
  • Fit & Finish 3.26087 3.3
  • Bang For Your Buck 3.971014 4.0



  • 1/5

    March 14, 2017

    Will NOT work with a stock h-pipe

    I'm only giving this 1 star because it was advertised as being able to work with the stock h-pipe, and it will NOT. Other reviewers have said the same thing and I should have listened. To make this work I ordered a Pypes X-pipe, which bolted up perfectly. Had I known I was going to need to purchase the X-pipe, I could have saved money by buying the kit that comes with both: the cat delete pipes and the xpipe. I was extremely frustrated at the whole experience. Keep in mind shipping these to AZ took exactly 1 week. Then I had to wait another week to get the xpipe.

    TravisW

    Year: 2013 Submodel: GT

    Helpful (3)

  • 1/5

    Installation Time: Shop Install

    Installation Cost: $250-$500

    December 21, 2016

    they dont fit!

    o2 bung in driver side is pointing down and manifold to cat delete is okay, but the connection to the h pipe is absolutely horrible! had to weld it in to make it work. not happy at all

    coyoteh

    Year: 2014 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    September 20, 2016

    Growl

    Nice sound,not to loud or raspy,just enough to make it sound mean,perfect fit,went on in no time at all...very happy.

    Mr02Stang

    Year: 2014 Submodel: GT

    Helpful (2)

  • 1/5

    Installation Time: Full Day

    September 13, 2016

    Beware of fitment

    I was so excited to get these on my car. I red tons of reviews and went out and bought all the additional tools I needed to get the job done. I have a stock system with flowmaster axlebacks. It took me about 4 hours to get the cats off and about 30 minutes to put the cat delet pipes bolted up loosely. After I put the factory Hughes pipe back in place the driver side delete was over two inches off! There was no way to alter or manipulate it to work so after another hour I decided to take them off and put the cats back on. This was a lot more difficult. I ended up spending about 12 hours on my back in my garage total and also ended up stripping a bolt on the driver side cat and had to take it to an exhaust shop to get it fixed spending get $80 on that. What a huge disappointment the Pypes cat deletes were. I will never by a Pypes product ever again.

    Black2012

    Year: 2012 Submodel: GT

    Helpful (2)

  • 2/5

    Installation Time: Afternoon

    July 03, 2016

    Sounds good poor fit

    They sound really good but really a poor fit had to weld them in wasn't even close for the band's to tighten up Ray Charles could have done better

    Smitty

    Year: 2014 Submodel: GT

    Helpful (2)

  • 5/5

    Installation Time: Less than 1 Hour

    October 15, 2015

    AMAZING SOUND

    Have borla s types and wanted some more grumble... I definitely got it with these car sounds so angry now!! as far as the install goes in order to make the leak that some people seem to be talking about go away all you need to do I unbolt the h pipe and slide forward slightly then they go perfect snug no leaks.

    usmcbearer

    Year: 2013 Submodel: GT

    Helpful (2)

  • 1/5

    Installation Time: Afternoon

    March 10, 2017

    Terrible fit!

    These don't fit! It does fine on the header side but I wound up welding them to the H-pipe....

    Rob

    Year: 2013 Submodel: Boss

    Helpful (1)

  • 1/5

    Installation Time: Full Day

    February 28, 2017

    Do not buy!

    I was pretty excited to install them and what should have been a two to three hour job, turned into a 6 hr job. had to cut them and weld some extra piping since was just that horrid. Better off just buying the whole H pipe instead of this junk...

    LuisC

    Year: 2012 Submodel: GT

    Helpful (1)

  • 1/5

    Installation Time: Shop Install

    Installation Cost: $100-$250

    January 12, 2017

    Did not fit.

    I took my 2013 Gt to a local Mustang shop. The mechanic tried for like 90 min to get them to fit. He said that the clamps did not work and he ordered me an H pipe and the H pipe fit great. I do NOT recommend this product.

    Mustang

    Year: 2013 Submodel: GT

    Helpful (1)

  • 1/5

    December 14, 2016

    simply doesn't fit

    After spending hours on getting the stock cats out we tried putting these pipes in, everything went well until we tried connecting the cat deletes to the stock h pipe. It doesn't fit correctly. The cat deletes are too big and the stock h pipe has no where to connect to.

    okiewaka

    Year: 2012 Submodel: GT

    Helpful (1)

  • 3/5

    December 14, 2016

    The Install....

    My only complaints Fitment - Passenger side, where it meets the X/H pipe, horrible fitment. Leaks unless welded together, noticed the pipe has a slight upward bend causing the fitment issue. Maybe it was just my set? Stock bolts holding in the cats to the header was a big pain to remove! Blasted the bolts with WD40 and let it sit for a little over an hour. Probably hit it about 2 to 3 times during that hour. Eventually, they broke loose after applying LOTS of pressure from inside the engine bay. The second for me was the passenger O2 sensor. Highly recommend an O2 removal tool and nothing else or you might screw up the O2 sensor like i did. This O2 sensor was more of a pain to remove than the bolts and took hours. I hit it several times with WD40 for hours before it broke loose. Muffler shops can have this removed easily by hitting it with heat but i live in the middle of no where with no muffler shops or torch. Unfortunately, due to these two problems, it took me about 6 hours or so. Now that everything has been removed and broken loose. I cant swap out the entire setup within an hour. These pipes will knock the dust off your neighbors roof when you turn on the car! If you have one of those neighbors, be ready for them to pay you a visit.

    George

    Year: 2011 Submodel: GT

    Helpful (1)

  • 1/5

    Installation Time: Afternoon

    December 14, 2016

    Terrible Fitment, unless you want to weld

    Ordered twice, made the mistake the first time of actually trying to install, that was a wasted day, the clamps dont work, and the pipes are way to big, they dont match up to the H pipe or aftermarket X pipes, the size of the pipe is the same size, even a little bit bigger then whats supossed to slide over it, I cant believe they havent fixed this by now. DO NOT BUY UNLESS YOU ARE OKAY WITH WELDING. WONT FIT WITHOUT WELDS.

    thejoker222

    Year: 2012 Submodel: GT

    Helpful (1)

  • 2/5

    December 09, 2016

    Use with aftermarket h/x pipe.

    The construction is great, that's about the end of it. The major problem is that they don't fit on to the stock h pipe on my boss 302, the pipes side is to large for the h pipe side to fit over enough to make a good seal. The o2 sensor location on the driver side points at a downward angle and is sure to be ripped off.

    Mikejones

    Year: 2013 Submodel: Boss

    Helpful (1)

  • 2/5

    Installation Time: Afternoon

    December 01, 2016

    Frustrating after the fact

    The quality of the welds was great, I love the fact that the pipes were stainless and not carbon steel that would rust. What I don't like is the cat delete pipes do NOT mate up to the factory H-pipe like it stated they did. The clamps provided did NOT work and the factory clamps were useless as well. End result was either re-install factory cats and return the pypes cat delete pipes or lower full exhaust and weld the joint at the cat delete/factory h-pipe. I chose to weld the pypes cat deletes to the factory h-pipe to complete the install.

    14

    Year: 2014 Submodel: GT

    Helpful (1)

  • 4/5

    November 30, 2016

    Awesome Pipes!

    My only problem with these cat-deletes were I have BBK X-pipes and had to weld extra piping to fit around these, other than that these are amazing and sound great!

    DTT

    Year: 2011 Submodel: GT

    Helpful (1)

  • 2/5

    Installation Time: Afternoon

    November 04, 2016

    Pypes o/r pipes.

    Quality materials , good performance gain. Absolutely horrid fitment issues !!! Says that these will fit with other pypes pieces OR oem connection. DID NOT fit up to the oem connection, the clamps need to be either wider or neck down from 3 inch to stock.

    StoneRhino88

    Year: 2013 Submodel: GT

    Helpful (1)

  • 1/5

    Installation Time: Full Day

    October 12, 2016

    Absolute Garbage. DO NOT BUY

    2014 GT, flowmaster outlaw catback. These plain and simple do not fit. The clamps that come with it do not provide enough clearance to actually clamp down. When you try to bolt the flange bolts back in, not only do they just spin (because of the cheap "steel" that they use) but since the clamps cant hold on they just slip off the x pipe. Even using OEM clamps the joints just dont sit securely enough to actually "grab" I am so unbelievably frustrated at the lack of quality control and the fact that no one has looked into this shoddy product with all of these reviews. There is a MAJOR issue with this product. Absolutely unbelievable.

    JonnyZed

    Year: 2014 Submodel: GT

    Helpful (1)

  • 2/5

    September 02, 2016

    Pypes fittment

    I have a 2014 Gt Track package. Fittment is not very good at all. Clamps sent with package are useless. Do not fit properly at all. Had an ASE Master Tech install and had to get 3 inch band clamps from parts store and still did not fill well. Obviously going to have to order an H pipe to match these although it was not recommended !!

    Byoull

    Year: 2014 Submodel: GT

    Helpful (1)

  • 2/5

    August 24, 2016

    fitment issues....

    nice product but fitment issues, fitment issues, fitment issues.....

    joel

    Year: 2012 Submodel: GT

    Helpful (1)

  • 4/5

    July 29, 2016

    High quality

    Installed in about 4 hours using ramps. What they don't tell you is that this does not bolt up to the stock h-pipe, and that the pypes H pipe comes with the cat deletes. it comes with hardware, but it is definately cheap Chinese metal, better off using your own hardware and getting new factory clamps from ford. Sounds good, fitment isn't bad,

    Bill

    Year: 2014 Submodel: GT

    Helpful (1)

Related Mustang Categories