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Pypes 3 in. Connect Cat-Back Exhaust w/ H-Box Mid-Pipe & Polished Tips (15-17 GT Fastback)

Market Price $932.99 You Save 12% ($108.31)
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  • Item 389201

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Ship to: Ashburn - 20149
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    Features & Details

    • Deep, Rich Sound with No Drone
    • Improves Exhaust Flow for More Power
    • M-80 Bullet Style Mufflers
    • H-Box Mid Pipe Included
    • Durable 304 Stainless Steel Construction
    • 3" Diameter Mandrel-Bent Tubing
    • 4" Polished 304 Stainless Steel Tips
    • Fits 2015-2017 GT Fastback Mustangs with Aftermarket Headers and a 3" Connection Mid Pipe
    Rich Muscle Car Sound. If you have upgraded your 2015-2017 GT Mustang with a set of aftermarket headers for more power, why in the world would you want to keep the factory cat-back exhaust? Announce your new found power to the world, by adding a deep rich muscle car exhaust note to your coyote powered Mustang with a Pypes Cat-Back Exhaust. Pypes uses a pair of M80 bullet mufflers and their H-Box mid pipe to create this powerful sound without any interior drone, allowing you to enjoy your radio while cruising around town. This Pypes 3" Cat-Back Exhaust is designed for those Mustang owners that are installing aftermarket headers that use 3" connection mid pipes in order to create a full 3" exhaust system.

    Better Flow for More Power. Pypes engineered their Cat-Back System to significantly improve the exhaust flow of your 2015-2017 5.0-liter Mustang. This Cat-Back replaces the restrictive factory 2.5" piping with larger diameter 3” mandrel bent piping, a pair of straight-through bullet mufflers and Pypes unique H-Box mid pipe. With these components in place you will see a noticeable increase in rear wheel horse power and torque.

    M80 Bullet Mufflers. Pypes M80 Bullet Mufflers feature a high-flow straight-through design. Engineered with a layer of stainless mesh around a unique internally louvered core and a lining of basalt insulation, these M80 Mufflers will improve exhaust flow for more power and sound.

    H-Box Mid-Pipe. Designed to eliminate the restrictive factory resonator the H-Box Mid Pipe improves exhaust flow when compared to traditional H and X mid pipes. The combination of the H-Box and the mid-muffler design helps accelerate the exiting exhaust to create significant rear wheel power gains.

    Quality Construction. Pypes Cat-Back Exhausts are manufactured from high quality 304 stainless steel piping for strength and excellent corrosion resistance. All Pypes Exhaust Systems feature smooth mandrel bent tubing to eliminate any power robbing kinks. Complete with a set of brightly polished 304 stainless steel 4" tips, this Cat-Back also adds bold muscle car styling to your Mustang.

    Direct Fit Upgrade. Pypes Mustang Cat-Back with H-Box Mid Pipe bolts straight up with no modifications required for installation. Making this Cat-Back a direct fit bolt-on replacement upgrade.

    Application. This Pypes 3" Cat-Back Exhaust System with H-Box is specifically designed to fit the 2015-2017 GT Fastback Mustangs equipped with aftermarket headers using a 3" connection Mid Pipe. Not compatible with convertible models.

    Fitment: 2015 2016 2017 Details

    MPN# SFM83MH

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) H-Box Mid-pipe With Mufflers
    • (2) Over Axle Pipes
    • (2) Axle-back Pipes
    • (2) Exhaust Tips
    • (8) Clamps
    Installation Info
    Tech Specs
    Cat-Back Exhaust Specifications
    Piping Material: 304 Stainless Steel Tip Material : Polished 304 Stainless Steel
    Piping Size: 3" Tip Size: 4"
    Muffler Type: Straight-through Fitment: 2015-2017 GT Fastback
    Will it fit my Mustang?
    • GT - 15, 16, 17

    Not compatible with Convertibles due to different bracing. This Cat-Back is for 15-17 GTs equipped with aftermarket headers and a 3" connection Mid Pipe.

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    Customer Reviews (2) Write a Review

    Overall Rating 4.5

    out of 5 stars

    Installation Time:Shop Install

    Installation Cost:0-$100

    • Loudness / Volume 5 5
    • Exhaust Note 5 5
    • Fit & Finish 2 2
    • Bang For Your Buck 4 4

    • 4/5

      Installation Time: Shop Install

      Installation Cost: 0-$100

      July 17, 2017

      Tried Pipes Exhaust for the First Time

      I'm not too happy about the fit. The right exhaust tip cannot be centered in the valance opening without the pipe further under the car resting against the fuel tank. The exhaust otherwise sounds good inside and out. I was looking for more muscle car sound without being too loud, and this does it. The shop mechanic who installed this for me, recommended three other aftermarket exhaust companies. Kooks, magnaflow, or corsa. He said, "he has never found a pypes exhaust that would fit up perfectly, and they all took in shop modification to fit", in his fifteen years of muffler shop work. Wish I'd saved up and gotten the magnaflow touring exhaust.


      Year: 2015 Submodel: GT

      Helpful (6)

    • 5/5

      July 12, 2016

      Great System

      This is a great exhaust system, I put it on my 2015 GT and was a little skeptical at first just because I like to keep things the way they come and this is a great system for anyone trying to spice up the sound of their 2015-16 GT.


      Year: 2016 Submodel: GT

      Helpful (7)

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