Free Shipping On Orders Over $49. Details

Talk to a Mustang Expert
M-F 8:30A-11P, Sat-Sun 8:30A-9P
Win $5,000 From Rovos! Enter daily!

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

Market Price $932.99 You Save 12% ($108.31)
Our Price


FREE Shipping

  • Item 389203

Will this fit your Vehicle?

In Stock Ships same business day.
Ship to: Ashburn - 20149
Sorry, please enter a valid US or CA postal code
We're sorry, zip can't be updated at this time.
    Create a list
    Add to New List

    Saved - View your saved items

    We're sorry. We couldn't save this product at this time.

    Features & Details

    • Deep, Rich Sound with No Drone
    • Improves Exhaust Flow for More Power
    • M-80 Bullet Style Mufflers
    • X-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. Let everyone know you have arrived on the scene by installing a Pypes Cat-Back Exhaust. This Cat-Back will add a deep muscle car note to the sound of your coyote powered Mustang's exhaust. Using a pair of M80 bullet mufflers and a X-Box mid pipe this Pypes Cat-Back creates its rich powerful sound without any unpleasant interior drone, so you can converse freely with passengers while tooling around town. Pypes designed their 3" Cat-Back Exhaust for those Mustang owners that are installing a set of aftermarket headers on their GT 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 X-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.

    X-Box Mid-Pipe. Designed to eliminate the restrictive factory resonator the X-Box Mid Pipe improves exhaust flow when compared to traditional H and X mid pipes. The combination of the X-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 X-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 X-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# SFM83MX

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) X-Box Mid-pipe With Mufflers
    • (2) Over Axle Pipes
    • (2) Cat-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 that use 3" connection mid pipes.

    You Might Also Like

    Customer Photos

    More Products You Might Like

    Q & A

    No questions about this product yet.

    Ask the First Question

    Recommended For You

    Customer Reviews (3) Write a Review

    Overall Rating 3.7

    out of 5 stars

    Installation Time:Afternoon

    • Loudness / Volume 3.666667 3.7
    • Exhaust Note 3.333333 3.3
    • Fit & Finish 3.333333 3.3
    • Bang For Your Buck 3.333333 3.3

    • 2/5

      Installation Time: Less than 1 Hour

      May 21, 2018

      More info

      This exhaust sound good however you must have 3' heaters or else it not going to fit. I didn't know and I have to return the item.


      Year: 2017 Submodel: GT

      Helpful (6)

    • 4/5

      Installation Time: Afternoon

      June 15, 2017

      pypes w?xbox 3inch s550

      X-BOX is LESS than 2.5 in. Very restrictive looking. After cutting that part off and with no cats, It sounds amazing!


      Year: 2017 Submodel: GT

      Helpful (8)

    • 5/5

      Installation Time: Afternoon

      May 29, 2017

      Good exhaust

      Great and raspy had a good note bearly any drone my buddy has the same exhaust on his car


      Year: 2015 Submodel: GT

      Helpful (9)

    Related Mustang Categories