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

Market Price $180.60 You Save 14% ($25.63)
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  • Item 102021
  • MPN# DFM76

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    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?

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    Customer Reviews (84) Write a Review

    Overall Rating 3.5

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$100-$250

    • Loudness / Volume 4.556962 4.6
    • Exhaust Note 4.417722 4.4
    • Fit & Finish 3.240506 3.2
    • Bang For Your Buck 3.949367 3.9



    • 5/5

      Installation Time: Afternoon

      July 12, 2018

      A pain in the rear

      The stock cat bolts on my way 13gt were beyond difficult to remove. So much so that I stripped it. Bought a stripped bolt remover. Then I rounded the bolt and so on. I tried wobble sockets, air impact, break bars etcs. Ultimately I took it to an exhaust shop that could not remove 3/4 non stripped bolts. They had to melt the stock hardware off. The replaced it with bolt and nuts that would allow me to switch in the future for smog tests. Up to this point in stages I have done, outlaw axle back, x pipe and jlt cold air. Each mod was an improvement in sound but I was never happy. It didn’t sound like the typical awesome s550 stang or the 3 valve s197. After the test pipe install, this thing is amazing and have received nothing but compliments. You will lose power but for the soundtrack I was willing. Paired with the Bama tune and ghost cam. It really demands attention.

      Chris

      Year: 2013 Submodel: GT

      Helpful (0)

    • 2/5

      Installation Time: Afternoon

      June 28, 2018

      bad

      really bad fitment I should have not gotten them.

      StevenE

      Year: 2014 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Full Day

      June 03, 2018

      Very nice

      Nice agressive sound just passenger side a pain in the behind to install gotta have patiance .

      MikelZ

      Year: 2014 Submodel: GT

      Helpful (1)

    • 4/5

      March 28, 2018

      Nice product

      Overall I was happy with the product except they wouldn't bolt to my midpipe had to return to order the bbk I wanted the stainless but couldn't justify spending the extra for new midpipes

      MatthewT

      Year: 2011 Submodel: GT

      Helpful (2)

    • 4/5

      March 22, 2018

      Pypes off road cat delete

      Super great product, really opens the car up and makes it extreamly loud!! No more sneaking in after hours hahah

      ErickA

      Year: 2014 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Shop Install

      March 20, 2018

      Cat Delete Pipes

      I like the way it sounds. Make the car more aggressive and improve performance.

      JoseA

      Year: 2014 Submodel: GT

      Helpful (2)

    • 2/5

      March 08, 2018

      Didn’t fit x pipe

      Had to weld it on for it to work doesn’t fit x pipe

      MattH

      Year: 2011 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      March 05, 2018

      Pypes system

      after buying these i have pypes all the way back. it doesnt fit well with the stock h pipe but if you have a pypes mid pipe it fits perfectly. my cars now stupid loud, just the way i like it, and if you need to be quiet third and forth are your best friend. took about 4 hours to install since all my stock bolts were rusted stuck and we had to break them all off. these do come with new bolts and clamps.

      DanielK

      Year: 2013 Submodel: GT

      Helpful (1)

    • 1/5

      Installation Time: Full Day

      December 30, 2017

      Worst idea ever

      This product really sucks the pipes don't match installer had to cut and weld to the stock H pipe I would strongly recommend not purchasing this product ever ever ever ever ever it really sucks

      JosephM

      Year: 2013 Submodel: GT

      Helpful (6)

    • 5/5

      Installation Time: Afternoon

      December 18, 2017

      Good product

      Brought the sound out in a awesome way, only problem was the mounting

      Rl

      Year: 2014 Submodel: GT

      Helpful (1)

    • 3/5

      December 08, 2017

      Needed to replace one !

      I already had these o/r pipes on my car, fit is such the drivers side hung down a bit, consequently when I incurred a large rock in the road, my Mustang with the left down pipe sitting a tad low...took a hit.. unfortunately they won't sell just a single pipe(Pypes) so had to buy the set to replace one side !

      FredMach

      Year: 2011 Submodel: GT

      Helpful (4)

    • 4/5

      Installation Time: Afternoon

      October 13, 2017

      Great product for the money

      With all factory exhaust this cat delete was to short. Had to buy extra wide bands separate to install. Not a big issue. Would buy again

      VenedimR

      Year: 2014 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      September 12, 2017

      Omg

      I kept seeing reviews about this and how loud it is.. well it's really loud and if you want to be that guy that likes to turn heads and wake up your neighbors bright and early in the morning than these are for you. 3 out of the 4 bolts are really easy to take off the cat but the 4th one is a pain

      MauricioS

      Year: 2013 Submodel: GT

      Helpful (3)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      September 08, 2017

      Sounds great feels better

      I read all the reviews about them not being direct bolt on, i still bought them regardless. I did try to install them with a friend but we had issues removing the passnger side bolt. The one that is in a very tight spot. You need a super lomg extension for that. Anyway it was difficult so i took them to an exhaust shop and im glad i took it cause they will need to have an adapter added to them so they can fit the rest of your exhaust. The shop had to make the front part of my x pipe out of 3in cause the pypes cat deletes were 3in and the x pipe is 2.75 or 2.5in. Another thing is they will hang lower than usual. That resulted in me hitting a speed bump pretty slow and it busted my gasket thats between the header and the cat delete. Other than that, they sound great and my car feels better too. I would buy again.

      Dustdraf

      Year: 2011 Submodel: GT

      Helpful (3)

    • 1/5

      Installation Time: Afternoon

      September 06, 2017

      Poor fitment

      I purchased these cat delete pipes for a smooth direct fit for my otherwise stock mustang. The delete pipes did not fit my stock H-pipe and had to be modified to MAKE them fit. Poor fit took an hour job into almost 3 hour job. I would recommend a different brand with better reviews.

      Evan

      Year: 2014 Submodel: GT

      Helpful (3)

    • 1/5

      August 31, 2017

      Boss 302

      Could not use. Needed temporary set up for track. These tubes need to be welded on. The fit to OEM "H" pipe is not working. Band clamp not wide enough. Have to send back. Pypes cannot help.

      BryanH

      Year: 2012 Submodel: Boss

      Helpful (2)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      August 30, 2017

      Cat delete

      Makes a big difference in sound. The end result is great, the install is a pain. I would highly recommend A. Buying the off-road x pipe that comes with the mid pipe too because it doesn't fit right with the stock exhaust sometimes. Mine one pipe was an inch too short. And B. I'd HIGHLY recommend professional installation. I got one on by myself but couldn't get to a stubborn weirdly placed bolt on the passenger side pipe. Wound up taking it to a shop and they had to cut the bolt off. End result is great though. Great sound.

      JonathanM

      Year: 2014 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      August 24, 2017

      Sounds great

      I got an amazing sound out of these to go along with my slp loudmouth axlebacks, only issue i had was the drivers side is a little short and the clamps dont want to hold when you take off but with some exhaust wrap it works fine

      DevinP

      Year: 2011 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      July 20, 2017

      Great Addition

      After reading reviews and chatting with the AM reps, I took a chance on the pypes cat deletes. After installation, I am glad I did. The fit and finish are wonderful. Mounted up to my factory manifolds with zero issues. I paired these with the pypes x-pipe and had no issues with fitment there either. Before mounting, I did test fit these with my stock h-pipe, and they would have worked just fine there as well. Other brand mid pipes may not fit quite as well, but for my application, I couldn't be happier. The sounds is worlds different, but still not obnoxious. Great tone under regular driving conditions and really talks to you at WOT. I have noticed MINIMAL interior drone as well. The full stainless material gives an exotic tone and the 3" mandrel bends really opens things up. I fully recommend. 100 satisfied!

      KrestonS

      Year: 2013 Submodel: GT

      Helpful (1)

    • 1/5

      Installation Time: Afternoon

      July 12, 2017

      Don't Fit

      Don't buy these unless you absolutely want to weld. They still don't line up, even though the company says 99.999 they do.. yea right. The ball and socket joint has no possible way to clamp. The 3" cat delete is slightly too big for the 2.75" H-pipe. Do yourself a favor and buy JEGS.

      Dave

      Year: 2014 Submodel: GT

      Helpful (2)

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