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Pypes 1-7/8 in. Long Tube Off-Road Headers - Factory Connect (15-17 GT)

Market Price $1,017.99 You Save 12% ($118.00)
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$899.99 (pair)

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  • Item 389192
  • MPN# HDR78SK-2

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    Features, Video & Details

    • Improves Rear Wheel Horsepower and Torque
    • Increases of over 50HP with a tune
    • Long Tube Header Design
    • 3" Off-Road Connection Pipes (Steps Down to 2.5")
    • Free Flowing Mandrel-Bent Tubing
    • 304 Polished Stainless Steel Construction
    • 1-3/4" to 1-7/8" Step Header with 3" Collector
    • Intended for Off-Road Track Use
    • Fits Left Hand Drive Models Only
    • Fits 2015-2017 GT Mustangs

    Review & Installation Video

    Review & Install Video

    Hey, what's up, everybody? I'm Justin with, and welcome to my detailed overview of the Pypes Off-Road Long Tube Headers with the 1-7/8-inch primaries, available for your 2015 and newer Mustang GT. All right, this detailed overview's gonna cover my thoughts on the benefits of installing a set of long tube headers, what you're gonna be looking at here with the Pypes system as far as quality and construction, we'll talk price, and then, finally, we'll talk installation. And long tube headers on the Coyote platform, you're looking a full-pull three out of three wrenches on the difficulty scale with some more detail later in the video. So the Pypes Long Tube Headers that we have in this video should appeal to the S550 Coyote owners out there looking to step into one of the more involved bolt-ons, of course, like a long tube header, and would prefer to get the best of both worlds, a nice, quality build but with a very affordable price tag. As for that diameter, well, the 1-7/8-inch primary is gonna be one of the most common in the category, and, in my opinion, I call it the jack-of-all-trades diameter. Definitely enough header, of course, for the naturally-aspirated setups, but enough header to grow into if and when forced induction enters the equation. So I'm sure a lot of my Mustang fans out there are probably more than familiar with the brand Pypes, know them best as an entry or value-level exhaust option in the category. But that doesn't necessarily mean their products are gonna suffer because of that, and never has that been more true with their S550 offerings. I've personally noticed a large increase in quality recently here with their S550 offerings, both the cat-backs and the long tube headers that we have in this particular video. Better materials, better welds, better quality are all things that I'm seeing throughout the brand, and it is a nice thing to point out for all my S550 owners. Well, let's a little bit more about the materials here with the Pypes system because, again, they are very nice for a company that's not usually known for that sort of thing. Premium grade 304 stainless steel throughout here, really nice weld, guys. Listen, I've seen some Pypes stuff in the past that I'd be like, "Eh," but that's not the case here with these particular long tube headers. Now, are you getting the same level of quality and construction that you would see with some of the premium options? Not exactly. For instance, some other premium headers might smooth out the welds inside the flange here a little bit more. Pypes doesn't do that, but what I can tell you, these things are gonna perform as intended for far south of $2,000 that you might spend on a set of Kooks or American Racing headers. Technically, yes, this is a 1-7/8-inch header, but it's a little unique in the fact that it features what is called a "step design." And this basically means that the header steps up in size the closer it gets to the collector. Now, it's a single step, mind you, but it is a step design, nonetheless. So let's talk about that a little bit more. You're starting out with a 1-3/4-inch primary for basically the first 6 to 8 inches of the header before stepping into that larger 1-7/8-inch diameter, and then, of course, everything exits or meets at the rather large 3-inch merge-style collector. Now, stepped headers are something that's been around for a long time in the world of hot-rodding and racing just with the goal of increasing your exhaust velocity, helping to create a broader power band overall. Now, this is something that I think will be attractive to a lot of owners out there, but mainly the guys that are looking to stay NA for now, basically for budget reasons, before maybe stepping into forced induction with a TVS, twin-screw, or a centrifugal. Because, in my opinion, a 1-3/4-inch header is really all you'll ever need for a naturally-aspirated setup, which you're kind of getting in this step design, but then, again, you've got that 1-7/8-inch diameter to grow into if you do go forced induction. Speaking of the primaries, they've all been CNC mandrel-bent to help increase your flow overall, and while not terribly important, the headers themselves have been polished lightly just to give you a little bit better appearance. But between you and I, you're really never gonna see these things once installed. Now, moving to that merge collector once again, a 3-inch collector featuring what Pypes calls their power spike technology. This is something a lot of header manufacturers have been doing lately with the Coyote applications, and it's just another thing to help increase exhaust velocity along with that step design we just talked about. Of course, this is Pypes' Off-Road Long Tube setup, meaning you're not gonna have any cats anywhere within the system here. It will, of course, offer you the biggest gains, but just make sure to check with your local laws before purchasing. Now, if you did like these long tube headers, but maybe you wanted to go with a catted version instead, we do sell one here on the site for about 100 bucks more. Another thing to point out with these particular long tube headers, the off-road version, is that they're gonna make your exhaust a lot louder. So just be ready for that, especially if you already have an aggressive cat-back in place. Of course, Xtreme, Flowmaster Outlaw, I'm looking at you. You are gonna just annihilate the neighborhood with long tube and one of those systems. Again, not a bad thing for some people out there, but certainly something you should be aware of. And then there's the biggest reason we all install long tube headers in the first place, of course, and that is the power gains that you get when installing something like this. Now, it's hard to put an exact number on a car without dyno-ing it because dynos, cars, mods, tunes, they're all gonna be different. But what you can expect is anywhere between 10 and 20 wheel horsepower with a quality tune, maybe a little bit more if you already have some supporting mods in place. Now, on the site, we do say you can install these Off-Road Long Tube Headers from Pypes without a tune, but I personally would recommend against that for two big reasons. First and foremost, you're just gonna see more power with a custom tune. Secondly, you're never really gonna see Check Engine light pop up here if you run these headers without a tune because the car's ECU's gonna start freaking out once it realizes the cats are no longer there. So take my advice. Get a tune. You're gonna be happier in the long run. And if you already have a custom tune in place from some of the big-name tuners out there, a lot of times, these guys are gonna offer you a free tune revision. So do yourself a favor, do your car a favor, and get yourself tuned. Well, what does this all mean when it comes time to talk price? I keep telling you these things are affordable, and, guys, I'm not lying to you. In fact, you're gonna be looking at right around 900 bucks for the price point for the Pypes Long Tube Headers, the Off-Road option, which, in my opinion, is very, very affordable. In fact, only the BBK options are gonna be slightly more affordable, but not by much. Now, for the install, and I can tell you this one certainly isn't gonna be fun, guys. Expect a full three out of three wrenches on the difficulty scale, a full day to maybe even a weekend in the shop or garage, depending on your level of expertise. This one is certainly gonna test your toolbox, guys, so just be ready for that. Have a solid set on hand before getting started, and I'm talking all the fixings here, ratcheting wrenches, sockets, extensions, swivels, the whole nine yards. Just be prepped for a big install. Now, typically, there are two schools of thought when tackling this install. Some guys, like myself, prefer to support the motor and transmission with a pole jack, remove the motor mounts, and install the headers that way. Other guys like to drop the entire front subframe and do the install that way. Whatever the case, guys, just know you're in for a pretty gnarly install here, and if you're not comfortable with this one, don't be afraid to call your local shop. Personally, I'm a big fan of the Pypes Off-Road Long Tube Headers for the simple fact that they're very affordable in the land of big-money brands, the quality and welds are all on point, and the best part is they're gonna perform just as well as anything else in the category. So that is my review of the Pypes Off-Road Long Tube Headers, which you can find right here at

    Improves Horsepower and Torque. Leave your opponent standing still at the starting line by installing a set of Pypes Long Tube Off-Road Headers on your GT. Pypes Off-Road Headers are engineered to improve the exhaust flow of your 5.0L Mustang for a measured increase in rear wheel horsepower and torque. Increases of 27 RWHP have been seen without a tune and over 50 RWHP with a custom tune. Pypes 1-7/8" Long Tube Off-Road Headers are ideal for use on naturally aspirated 5.0L Mustangs, but really come into their own when you decide to step up to a bigger cam or supercharger.

    Quality Construction. Pypes 304 stainless steel Long Tube Exhaust Headers are manufactured using step tube technology. These Long Tube Headers are constructed from free flowing CNC mandrel-bent 1-3/4" primary tubes that step up to 1-7/8" and then merge at a 3" collector. The collector features a power spike design for excellent exhaust flow. Pypes Long Tube Headers are then completed in a bright polished finish for impressive good looks.

    Required Upgrade. To realize the full power potential that these Long Tube Off-Road Headers have to offer, AmericanMuscle recommends a Bama custom tune with a Mustang Handheld Tuner to reprogram the vehicles computer (ECU) for proper operation.

    Application. These Pypes Long Tube Off-Road Headers are specifically designed to fit the 2015 to 2017 GT Mustangs equipped with the DOHC Coyote 5.0L V8 engine. These headers with connection pipes are a direct bolt on to the stock 2.5" exhaust system.

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

    Please Note. These Headers are intended for left hand drive applications only.

    Fitment: 2015 2016 2017 Details

    What's in the Box
    • (1) Driver Side Long Tube Header
    • (1) Passenger Side Long Tube Header
    • (2) Off-Road Connection Pipe Assemblies
    • O2 Sensor Extensions
    Installation Info
    Tech Specs
    Header Specifications
    Header Type: Long Tube Type Mid Pipe Required: 2.5" Stock or 2.5" Aftermarket
    Material: 304 Stainless Steel Finish: Polished
    Catalytic Converter: "No" - For off-road use only Fitment: 2015-2017 GT Mustangs
    Will it fit my Mustang?

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    19 Questions / 19 Answers

    Ask a Question

    Will this fit flowmaster scavenger xpipe with flow masters outflaws


    • The Pypes 1-7/8 in. Long Tube Off-Road Headers will work with Flowmaster Scavenger Series Cut and Clamp Resonator Delete X-Pipe and Flowmaster Outlaws.


    Helpful (1)

    Will this connect straight into a 3" mbrp street cat back


    • These are designed to bolt up to a 2.5 inch piping. Modification would be needed to fit this up to a 3 inch exhaust.


    Helpful (1)

    Will this fit my 2018 mustang gt?


    • At this time, the Pypes long tube headers have not been confirmed to fit the 2018 Mustang GT model.


    Helpful (0)

    Do these require disconnecting ac line and draining Freon?


    • Installation of the Pypes 1-7/8 in. Long Tube Off-Road Headers does not require recovering the A/C Refrigerant or removal of any A/C lines, though this can ease installation.


    Helpful (0)

    Does this set of headers come with a shorty mid pipe, and if not is one needed?


    • The Pypes 1-7/8 in. Long Tube Off-Road Headers will not require a shorty mid pipe due to the included connection pipes.

      Rob D

    Helpful (0)

    will this fit borla atak catback?


    • Hello, TomitheusT5U2315946 the Pypes 1-7/8 in. Long Tube Off-Road Headers are a direct bolt on to the stock or any aftermarket 2.5" exhaust system. With that being said you would need to have the 2.5 inch ATAK exhaust, I have provided a link to that below.


    Helpful (0)

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    Customer Reviews (11) Write a Review

    Overall Rating 4.5

    out of 5 stars

    Installation Time:Weekend

    Installation Cost:$250-$500

    • Loudness / Volume 4.7 4.7
    • Exhaust Note 5 5
    • Fit & Finish 4.7 4.7
    • Bang For Your Buck 5 5

    • 5/5

      Installation Time: Weekend

      June 01, 2018

      Loud as heck! Consider the high flow cats.

      Before the headers i was running the flowmaster scavenger series X pipe with Magnaflow race series axel back. the car was already loud but i wanted to kick it up a notch. I installed the headers my self and took about 2 full days with a lift as it was a learning process for me. Then i had the car tuned for it by Lund Tuning. After working on the car for 2 days the anticipation for the start up was huge. I wasnt sure what to expect running cat-less and muffler-less. The car is LOUD!!!!! Pretty much just driving like a normal person sounds like NASCAR, turns heads everywhere you go. performance gains were insane and could be felt immediately. Iv been told by several people that its the loudest mustang they've ever heard. However my fun came to an end after about a week and a half of running the system when i was pulled over and given an inspection ticket :( but it didnt stop there. 2 days later i was driving the car normally, no revving or quick acceleration. red and blue. officer walks up and gives me a citation for "Driving in a manner intended to make excessive noise." Moral of the story is, you may want to go with the high flow cat system just in case you receive a repair order.


      Year: 2016 Submodel: GT

      Helpful (1)

    • 4/5

      Installation Time: Weekend

      March 27, 2018

      Great Product

      It was a difficult install but glad I saved the money, only bad thing is one midpipe was shorter than the other one so i had to get it cut and extended. Overall my mustang is so much louder, would reccomend.


      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Full Day

      December 13, 2017

      Sound Town

      Sounds good, fits good, runs good. I knuckle drag for a living so install wasn’t too bad. Worth the $$


      Year: 2017 Submodel: GT

      Helpful (4)

    • 1/5

      Installation Time: Weekend

      September 10, 2017

      Pypes Headers

      These Pypes Long Tube Off-Road Headers are awesome! They have a great look and a great sound. I was impressed with the workmanship, fit and quality of materals. You really get your moneys worth when you purchase Pypes Headers!


      Year: 2017 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Full Day

      September 05, 2017

      Vroom vroom

      Totally happy with end results.. have them paired with MBRP race exhaust and a custom tune for local tune shop. My neighbors hate me cause my car is loud!!


      Year: 2015 Submodel: GT

      Helpful (6)

    • 5/5

      Installation Time: Full Day

      August 29, 2017

      Extremely pleased

      I'm more than happy with this set of headers They sound amazing with the mbrp race cat back Sounds loud but not raspy at all. I also gained a lot of power and the best thing is that they have a lot of clearance and u don't have to worry about false knock


      Year: 2015 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $250-$500

      April 16, 2017

      Perfect fit

      These tubes fit perfect with no rubbing issues. It is night and day. The car scares people to my satisfaction lol. A must have paired with a bama tune and c and l racer intake.


      Year: 2017 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Full Day

      January 21, 2017

      Great product

      Did the install myself in garage on jack stands,,wasnt as bad as i thought,,my knuckles might think otherwise,,lol ,went without any problems,,could have done it faster but ,,,,, ,,working on another project for wife,installed cold air and tune,,woke car up ,,mo doubt


      Year: 2016 Submodel: GT

      Helpful (5)

    • 5/5

      September 11, 2016

      Totally worth the money!!

      The install took me about 8 hours, doing it by myself on jack stands. The passenger side is by far the hardest to install. It was totally worth it the second I started up the car. I have the MBRP race catback, and the sound that both products make together is intoxicating. Definitely noticed a good gain in power!! Now I have to watch how aggressive I am with shifting, because she will get squirrely in 3rd!


      Year: 2015 Submodel: GT

      Helpful (8)

    • 5/5

      Installation Time: Weekend

      April 27, 2016

      Good quality

      Not going to lie, install is not fun! took me and a friend about 14 hours total. we are both mechanically inclined its just little to no room to work with. other than that they are awesome! love the sound and love the power!


      Year: 2015 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      April 06, 2016

      Ground shaking

      These headers are super amazing, really opens up the car to another level.


      Year: 2015 Submodel: GT

      Helpful (6)

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