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Corsa Xtreme 3 in. Cat-Back Exhaust w/ Black Quad Tips (15-17 GT Premium Fastback; 18-20 GT Fastback w/o Active Exhaust)

Item 390911
Market Price $1,936.82 You Save 12% ($222.83)
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    Features, Video & Details

    • Corsa Xtreme Cat-Back
    • Deep Aggressive Sound without the Drone
    • Straight-Through Xtreme Mufflers Featuring Corsa's Patented RSC Technology
    • Double Helix X-Pipe Included
    • 304 Stainless Steel Construction
    • 3" Mandrel-Bent Tubing w/ 2.5" Step-Down Flanges
    • Black Chromed, Twin 4" Pro-Series Tips
    • Proudly Designed, Engineered and Manufactured in the USA
    • Fits 2015-2017 Premium Package GT Fastback Mustangs equipped with a Roush Rear Valance
    • Fits 2018-2020 GT Fastback Mustangs without the Active Valve Exhaust System

    Review & Installation Video

    Review & Install Video

    Xtreme Aggressive Sound. Be heard long before being scene by installing a Corsa Performance Xtreme Cat-Back Exhaust System on your GT Mustang. Acoustically engineered and tuned, this Corsa Xtreme Cat-Back will give your 5.0L V8 Mustang a throaty, aggressive sound under acceleration and a deep growl at idle, all without any annoying drone while cruising. An Xtreme Cat-Back Exhaust is ideal for those GT Mustang owners who don't care if they wake up their neighbors. As an added bonus a Corsa Xtreme Cat-Back will also improve your Mustang's exhaust flow by 43% for an increase of 5 RWHP and 4 RWTQ.

    Race Car Growl. Corsa Performance Xtreme Cat-Back Systems feature a very unique double helix X-Pipe that replaces the factory resonator Mid Pipe. The double helix "X" crossover design not only helps improve exhaust flow for an increase in power, but it also adds a crisp raspy, race car growl to the sound of your Mustang's exhaust.

    RSC™ Technology. Corsa Performance engineers all their mufflers using their very own patented Reflective Sound Cancellation® Technology (RSC™). RSC™ Technology is designed to give your Mustang's exhaust an aggressive sound under acceleration and a drone-free experience while cruising.

    Quality Construction. Corsa Performance proudly manufactures their Cat-Back Exhaust systems right here in the good ole USA. This Corsa Cat-Back is mandrel-bent from 3 inch diameter, premium grade, 304 stainless steel tubing for excellent exhaust flow and enduring corrosion resistance. The system includes a double helix X-Pipe and two high flow, straight-through Xtreme mufflers. The mufflers feature a pair of black chromed twin 4 inch Pro-Series tips. Step down flanges are included, so that this 3 inch Corsa Cat-Back can be installed with the factory 2.5 inch exhaust.

    Application. This Corsa Xtreme Cat-Back Exhaust System with Black Chromed Quad Tips is designed to fit 2015-2017 Fastback GT Mustangs equipped with the factory Premium Chassis Package (Trim Levels: 400A/401A) and the 2018-2020 Fastback GT Mustangs that is not equipped with the Active Valve Exhaust System.

    Application Note. The 2015-2017 Model Years will require the use of the Roush Rear Valance 421894 or 421919 for proper installation (valance sold separately). Does not fit convertible models.

    Fitment: 2015 2016 2017 2018 2019 2020 Details

    MPN# 14335BLK

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (2) Twin Exhaust Tips
    • (1) Right Muffler Assembly
    • (1) Left Muffler Assembly
    • (1) X pipe assembly
    • (1) Right Over Axle Intermediate Pipe
    • (1) Left Over Axle Intermediate Pipe
    • (2) Step Down Flanges - for use with OE Size Exhaust
    • Clamps
    • Installation Hardware
    Installation Info
    Tech Specs
    Cat-Back Exhaust Specifications
    Piping Material:304 Stainless SteelTip Material :Black Chromed 304 Stainless Steel
    Piping Size:3" - 2.5" Step Downs IncludedTip Size:4" Twin
    Muffler Type:Straight-throughFitment:2015-2017 GT Fastback
    Will it fit my Mustang?

      Customer Photos (20) Submit Your Photo

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        Questions & Answers (39)

        5 Top Rated Questions

        Hi, i have a 2018 mustang GT base. Would this set up fit even though its not a premium? Thanks!

        • This cat-back exhaust will fit all 2018 Mustang GT models that are not equipped with the active exhaust option.

        Helpful (1)

        Will these have any negative affect on emissions? I live in California and don't want to have to deal with that sort of thing. Also I have a 2018 GT with a Performance Package that already comes with stock Quad tip exhausts so will these fit without any issues?

        • The Corsa Xtreme 3 in. Cat-Back Exhaust will install after all of the factory emissions equipment, making this legal for California Smog testing. One thing to check into would be local exhaust volume regulations, as this can vary greatly across the country. This should have no issues working with your 2018's valance since you already have quad tips.

        Helpful (1)

        will it fit the V6 if the premium bumper cover is installed on the car, or are there any other complications?

        • Unfortunately, the Corsa Xtreme 3 in. Cat-Back Exhaust is designed for the 15-17 GT Mustangs. This Cat-Back may not bolt up correctly to a V6. Thus requiring modifications for proper fitment.

        Helpful (1)

        So if my 2019 mustang has active exhaust, these won’t fit unless I buy the Corsa extreme exhaust “with active exhaust?” Don’t really care for the active exhaust to begin with.

        What long tube headers were used in the video?

        10 More Questions
        I've seen several videos with this exhaust, and most of them have the deeper throaty tone, but the video posted above has more of a raspy tone. Is it deep and throaty or raspy? Thanks! 1 answer
        Will this exhaust for my 2019 gt non premium? 1 answer
        I have a 2016 GT premium everything is stock I don’t want to change my rear bumper, will this quad exhaust fit??? 1 answer
        Will this fit my 2018 saleen white label? 1 answer
        will this fit a 2016 base model GT? 1 answer
        Will this exhaust crackle and pop? I'm looking to get a loud quad tip exhaust for my '15 GT that does just that. 1 answer
        With the x pipe and catback exhaust in place, how much more horsepower will be added on? 1 answer
        Does this comes with warranty? 1 answer
        I was wondering if this would fit with the Gt350 rear bumber that your site offers? 1 answer
        Does anyone have decibel reading for this exhaust ? 1 answer

          Customer Reviews (39) Write a Review

          Ratings Summary

          4.9 out of 5 overall rating from 39 customers

          Installation Time: Afternoon

          Installation Cost: $100-$250

          • December 04, 2019

            5 2018 GT - andrew155 Installation Time: Less than 1 Hour

            product makes the car sound way meaner not annoyingly loud once you get to a speed and stay there sounds great while accelerating though.

            Helpful (1)
          • September 30, 2019

            5 2018 GT - Cbpowerred Installation Time: Afternoon

            Excellent sound

            The best sound ever. I was Debating of all the reviews if this was too loud for me or had too much drone. That is great excellent quality sound no drone in the car when you don’t want it. Installed by my self in my garage, took almost 3 hours.

            Helpful (0)
          • August 26, 2019

            3 2019 GT - GTOnly

            Loud but poor fitment

            Installed and have had 3 months. It’s worth it and it’s LOUD. It’s fun to hear it every morning and evening going to work. This is the reason I wake up at 5am to go to work. However 3 stars because the fitment was really bad. The left side tips and right side tips are not even and the right side is lower than the left. It looks bad.

            Helpful (1)
          • June 02, 2019

            5 2018 GT - 18magnastang

            Two thumbs up

            Amazing sound ! ! Not too loud when cruzin but when you get on it WOW! Took about two hours by myself to take the stock exhaust for and install the new exhaust .

            Helpful (1)
          • May 02, 2019

            5 2019 GT - Toastys550 Installation Time: Afternoon

            Sound Like Any Other

            Cruising with this catback is quiet, step on your throttle and you will hear your car starting to grumble begging you for more, give it more and you won't be disappointed. Those cold starts? Well there is nothing like the Corsa Extreme Start ups. Took me about 4 hr to install. I did it with jack stands at home and you will definitely need two people to make the install easier and efficient. The hard part is not installing the system, most of your time will be spent adjusting to get that perfect fitment. P.S. your neighbor's and your family might start to hate you at 6am in the morning.

            Helpful (1)
          • April 28, 2019

            5 2015 GT - ZF Installation Time: Afternoon

            Sounds nasty love it

            Great quality, great fit and sounds great! More words to get to 50 characters

            Helpful (2)
          • April 18, 2019

            4 2018 GT - WilliamP Installation Time: Less than 1 Hour

            Everything but the fit

            LOUD. Easy install, I recommend removing the rear exhaust grommets though as the instructions they provide don’t really make sense, and the fit is not as spot on in the rear as I would like it to be. Sits very close to the valence. But the exhaust itself is amazing

            Helpful (0)
          • April 10, 2019

            5 2018 GT - SommerS Installation Time: Afternoon

            Absolutely Love How Aggressive The Sound Is

            Wow is a understatement! It sounds mean! Exactly what I wanted, plus it looks amazing!

            Helpful (0)
          • March 09, 2019

            5 2016 GT - Aaron22 Installation Time: Afternoon

            All I can say is WOW

            This is the best sounding exhaust I’ve heard on the s550. Yes this is on more of the high end for an exhaust but I think it’s worth every penny. It took my about a full afternoon so expect to make a day out of the install. When you turn it on for the first time all you can do is smile. P

            Helpful (0)
          • February 10, 2019

            5 2019 GT - Dwight Installation Time: Shop Install Installation Cost: $100-$250

            The Sound!!!!

            This exhaust system is like a orchestra of high pitched notes and the muscle car sound everyone looks for. Ford should team up with Corsa and off this as an addition to these cars.

            Helpful (3)
          • January 24, 2019

            5 2016 GT - ShaneP Installation Time: Shop Install Installation Cost: $100-$250


            I absolutely love these. Watching videos doesn't justify the loudness of this system. An incredible difference from the stock exhaust, night and day. Don't hesitate on purchasing these if your thinking about buying these.

            Helpful (3)
          • December 06, 2018

            5 2018 GT - RG5OH Installation Time: Shop Install Installation Cost: 0-$100


            If you want loud, Corsa is the way to go! Had to adjust the tips a bit but other than that, it’s good!

            Helpful (7)
          • December 03, 2018

            5 2018 GT - Adalberto Installation Time: Less than 1 Hour

            Awesome tips sounds amazing

            This think roars!!! Loud!!! Took about an hour to instal. Great fit. Cant wait to put long tube headers. I drive in the city at night and this think is so loud it echoes.

            Helpful (4)
          • October 09, 2018

            5 2018 GT - Bart Installation Time: Less than 1 Hour

            You want loud? You got it!

            When you run the car and drive around after install, it is really high pitched compared to the stock GT exhaust. After you “break it in” by driving for give or take 2 weeks, it will get noticeably deeper. You can cruise with this exhaust without being annoyed from the noise. You will find a whole range of exhaust tones going through the revs. Haven’t been pulled over for it, yet....

            Helpful (7)
          • September 13, 2018

            5 2018 GT - Austin Installation Time: Shop Install

            Very Impressed!!

            You want your mustang to wake up the neighborhood. This one is it!! I love it!

            Helpful (6)
          • August 27, 2018

            5 2015 GT - RexH Installation Time: Afternoon

            Changes Everything!!

            As soon as I went from my stock exhaust to the Corsa extremes, I started breaking necks and having more confidence in my Stang. 100 percent worth the investment.

            Helpful (7)
          • July 26, 2018

            5 2018 GT - ErnestO Installation Time: Less than 1 Hour

            Great quality and sound

            Sounds perfect after easy install. Exactly what I was looking for.

            Helpful (7)
          • July 20, 2018

            5 2018 GT - Nosam Installation Time: Less than 1 Hour

            THEY ARE LOUD

            I got these installed on my 18 GT and they are freaking LOUD. Once you drive them around for a while and break the pipes in, the note sounds very meaty and aggressive. One of my favorite features is the resonance cancelling in the muffler, so when the car is at idle it's nice and quiet.

            Helpful (6)
          • July 13, 2018

            5 2018 GT - Frankelburger Installation Time: Less than 1 Hour

            2018 Mustang gt corsa xtreme review

            First off I wanna say this is probably the best exhaust out there if not close to it, the sound of it reminds me so much of the 99-04 style GTs but a lot louder and more throaty. It has absolutely no drone and although it is loud especially when you get one it, it is not obnoxious at all. This is my 4th mustang and probably the 12th different exhaust I’ve had and this exhaust in just on another level, honestly put the borla atak’s I had on my 2014 to shame. Last off the quality is amazing and the finish on every piece is top notch. I highly recommend this exhaust and I believe it’s worth the price tag that it comes with.

            Helpful (10)
          • July 02, 2018

            5 2018 GT - Krisc Installation Time: Shop Install Installation Cost: $100-$250


            IT IS LOUND AND NICE, but it is not very fit with the 2018 mustang

            Helpful (6)

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