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Pypes 1-7/8 in. Long Tube Catted Headers (15-17 GT)

Market Price $1,125.99 You Save 12% ($131.00)
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$994.99 (pair)

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  • Item 389191
  • MPN# HDR78SK-1

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    Features, Video & Details

    • Improves Rear Wheel Horsepower and Torque
    • Increases of 27HP without a tune and over 50HP with a tune
    • Increases Exhaust Volume and Tone
    • Long Tube Header Design
    • High Flow Catalytic Converters Included
    • 3" Catted Connection Pipe (Steps Down to 2.5")
    • 1-3/4" to 1-7/8" Step Header with 3" Collector
    • Free Flowing Mandrel-Bent Tubing
    • 304 Polished Stainless Steel Construction
    • Intended for Off-Road Track Use
    • Calibration Required for Operation
    • Fits Left Hand Drive 2015-2017 GT Mustangs Only

    Review & Installation Video

    Review & Install Video

    Hey, guys. I'm Justin with, here with my detailed overview of the Pypes Catted Long Tube Headers with 1 and 7/8 inch primaries fitting your 2015 and up Mustang GT. All right, guys, this overview is gonna cover the basic construction of the Pypes Catted Long Tube Headers, what you can expect as far as performance and benefits, and then finally we'll do a quick little walkthrough on the install. And speaking of the install, this one's gonna get a full three out of three wrenches on my difficulty scale. Long tube headers are always a chore on the Coyote-powered Mustangs and these are no different, and we'll have a little bit more detail on that later on. The Pypes Catted Long Tube should appeal to anyone with a newer S-550 GT out there who is looking to step into one of the more serious bolt-ons and doesn't want to totally destroy their budget or wallet in the process.

    Improves Horsepower and Torque. Give the guy in the opposing lane a run for his money by installing a pair of Pypes Long Tube Headers under the hood of your GT. Pypes Headers are engineered to increase the exhaust flow of your Coyote powered Mustang for an improvement 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 Headers are great 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.

    Make Some Extra Noise. Pypes Long Tube Headers not only improve the performance of your 5.0L V8 powered Mustang, but they will also improve its sound. With its high-flow design, these Long Tube Headers are less restrictive than stock allowing you to pick up a few decibels in your exhaust note for a more aggressive sound.

    High Flow Cats. Pypes high flowing catalytic converters are designed to outperform the restrictive factory cats. The included high flow catalytic converters provide a significant improvement in exhaust flow for a measured increase in rear wheel horsepower and torque.

    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.

    Calibration Required. Installation of this Pypes Long Tube Catted Headers will require the use of a Handheld Tuner to reprogram the vehicles computer (ECU) for operation. By reprogramming your Mustangs ECU you will be able to realize the full power potential that these headers have to offer.

    No CARB Certification. These Headers are not CARB certified, therefore they are not legal for use in California or any other state adopting California emission standards. Not legal for use on pollution controlled motor vehicles; intended for off road use only.

    Application. These Pypes Long Tube Catted Headers are specifically designed to fit the 2015 to 2017 GT Mustangs equipped with the DOHC Coyote 5.0L V8 engine. These headers and connector pipes are a direct bolt on to the stock 2.5" exhaust system. 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) Catted Connection Pipe Assemblies
    • O2 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: "Yes" - For off-road use only Fitment: 2015-2017 GT Mustangs
    Will it fit my Mustang?
    • GT - 15, 16, 17

    These Headers are intended for left hand drive applications only.

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    14 Questions / 6 Answers

    Ask a Question

    Will these connect to a cat-back like the AWE that have a 2.5 inch connection point?


    • Hey Eric, There is a stepdown pipe that would allow this system to connect to a 2.5" pipe


    Helpful (1)

    Does this fit with the factory resonator? Basically, trying to keep my car to pass inspection still. Living in Texas. But wanna boost power, louder and get that deep, throaty sound. Thank you!


    • Your car should pass a TX state inspection without the stock resonator. Since it is not the primary muffler replacing it with an H or X pipe is the perfect solution. Plus, that stock resonator is going to hamper any gains you are looking for with installing the full length headers.


    Helpful (1)

    Is a tune required as soon as I install? Or can I run these without a tune until I get a handheld tuner? Thanks


    • The Pypes 1-7/8 in. Long Tube Catted Headers require a tune immediately after install.


    Helpful (0)

    Do i need to buy anything else besides this kit and new gaskets?


    • The Pypes 1-7/8 in. Long Tube Catted Headers will require a tune to ensure your Mustang runs properly after install.

      Rob D

    Helpful (0)

    do i need new gaskets when installing these headers?


    • Yes, With installation of the Pypes 1-7/8 in. Long Tube Catted Headers you should change your gaskets as well.


    Helpful (0)

    Will this be a direct fit paired with my roush x pipe and roush axle back exhaust?


    • The Pypes 1-7/8 inch Long Tube Catted Headers have diameters of 2.5 inches, so long as they have the same piping size, it would be a direct fit.


    Helpful (0)

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    Customer Reviews (4) Write a Review

    Overall Rating 4.8

    out of 5 stars

    Installation Time:Full Day

    • Loudness / Volume 5 5
    • Exhaust Note 5 5
    • Fit & Finish 4.333333 4.3
    • Bang For Your Buck 4.666667 4.7

    • 4/5

      Installation Time: Full Day

      March 30, 2017

      Great sound and power

      I used a lift when I did my install. Talk me 8 hours from start to finish running into no issues, and didn't take any breaks. Install went well, it's just hard due to working in a tight space. The rear o2 extension pig tails did not line up/work with my oem harness, but the front 2 o2 extensions worked fine. Overall good product. Only bad thing is that the o2 extensions did not work! Well worth all the work!


      Year: 2015 Submodel: GT

      Helpful (0)

    • 5/5

      July 17, 2016

      Let your stang breathe!

      Came undamaged and well packaged. Dropped off at a performance shop and had the car back the same day. Loaded Bama's Ghost Cam tune with it. Sounds incredible. Only complaint is the passenger side headers rattle against the motor mount stud. Currently trying to solve that small issue. Definitely feel the power!


      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Full Day

      July 01, 2016

      Big Gains

      The figment on the headers was perfect. The mid pipe almost perfect. I can really feel the power gains especially after the tune. The car is much louder now. I would reccomend these to anyone.


      Year: 2015 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Full Day

      May 01, 2016

      Very loud

      These long tube headers are what you really want. They are aggressive and demanding you to step on the gas. Absolutely love them.


      Year: 2015 Submodel: GT

      Helpful (0)

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