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Corsa Xtreme 3 in. Cat-Back Exhaust - Polished Quad Tips (15-18 GT Premium Fastback; 2018 GT Fastback w/o Active Exhaust)

Market Price $1,767.99 You Save 12% ($204.99)
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$1,563.00

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  • Item 390910
  • MPN# 14335

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    Features & 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
    • Mirror Polished, Twin 4" Pro-Series Tips
    • Proudly Designed, Engineered and Manufactured in the USA
    • Fits 2015-2018 Premium Package GT Fastback Mustangs equipped with a Roush Rear Valance
    • Fits 2018 GT Fastback Mustangs without the Active Valve Exhaust System
    Xtreme Aggressive Sound. If you want your GT Mustang to strike terror in the hearts of others as you blast down the road, you need to upgrade to a Corsa Performance Xtreme Cat-Back Exhaust System. Acoustically engineered and tuned, this Corsa Xtreme Cat-Back will give your coyote powered Mustang a throaty, aggressive sound under acceleration and a deep growl at idle, all without any annoying drone while cruising. This Xtreme exhaust is for those Mustang owners who don't mind disturbing the peace. 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" 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 mirror polished twin 4" Pro-Series tips. Step down flanges are included, so that this 3" Corsa Axle-Back can be installed with the factory 2.5" exhaust.Application. This Corsa Xtreme Cat-Back Exhaust System with Polished 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 Fastback GT Mustangs that is not equipped with the Active Exhaust System.

    Application. 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 Details

    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 Steel Tip Material : Polished 304 Stainless Steel
    Piping Size: 3" - 2.5" Step Downs Included Tip Size: 4" Twin
    Muffler Type: Straight-through Fitment: 2015-2017 GT Fastback
    Will it fit my Mustang?
    • GT - 15, 16, 17, 18

    Compatible with Premium Package Fastback GT Mustangs equipped with required 15-17 Roush Rear Valance only.

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    3 Questions / 3 Answers

    Ask a Question

    Is this legal in california?

    JohnA

    • The Corsa Xtreme 3 in. Cat-Back Exhaust does not affect your Catalytic Converters, and should not affect emissions inspection. However, it is best to check with your local smog center or inspection station to be sure.

      VincentV

    Helpful (1)

    Will this catback system fit with the GT350 rear valance?

    MiguelA

    • Yes, the Quad Tip Corsa Xtreme Cat-Back Exhaust will fit with the GT350 Rear Valance shown here: https://www.americanmuscle.com/mpconcepts-gt350-rear-bumper-kit-1517.html

      AMJustin

    Helpful (0)

    The production description says that for 2015-2017 models, this exhaust "will require the use of the Roush Rear Valance 421894 or 421919 for proper installation." Does this hold true for the 2018 models? The 2018 Perf Package has a stock quad exhaust, so I would like to know if purchasing the Roush valance will be necessary.

    MilesW

    • The Roush rear valance is required for the 15-17 models due to the exhaust openings being to small from the factory. Since the 2018 comes stock with quad tip exhaust the Roush rear valance will be obsolete and the Corsa Xtreme 3 in. Cat-Back Exhaust will fit with no modifications.

      ChrisAM

    Helpful (0)

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    Customer Reviews (9) Write a Review

    Overall Rating 5.0

    out of 5 stars

    Installation Time:Less than 1 Hour

    • Loudness / Volume 5 5
    • Exhaust Note 4.888889 4.9
    • Fit & Finish 5 5
    • Bang For Your Buck 4.555555 4.6



    • 5/5

      Installation Time: Less than 1 Hour

      November 05, 2017

      Great!

      Easy install, and beautiful sound! No drone just as advertised. By far best exhaust I've ever purchased.

      Sergio

      Year: 2015 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      October 19, 2017

      This Exhaust is Awesome

      I put it on my Wife's 17 Gt and it went on in less than an hour after I put it on the jack stands. the new car Exhaust is on the car with only 6 bolts. 8 Bolts to install new on car.

      Warren

      Year: 2017 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      October 08, 2017

      New pipes

      Well it took me less than an hour and it sounds awesome. LOUD my wife’s car and she loves it.

      WarrenL

      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      August 16, 2017

      Can't keep my foot off the Gas

      I just can't keep my foot off the Gas. It is loud with My heavy foot. But tamed almost stealthy if parked.. I drive at Highway speeds and No Drone If you keep the RPMs lower it can be whisper until the heavy foot wakes the Beast! You can still talk on blue tooth. Sound Amazing in a parking Garage.. Wicked sounding. Wish I had long tunnel to drive through. Had to change My rear bumper from PP to premium add Roush rear Valance add good to go Quad Tips..

      2016stang

      Year: 2017 Submodel: GT

      Helpful (0)

    • 5/5

      Installation Time: Less than 1 Hour

      July 26, 2017

      Very loud !

      Product quality is perfect. Sounds amazing for just being the cat-back not aftermarket headers. If you want your neighbor to hate you this is the perfect exhaust.... if purchasing quad tips and you plan on Installing Roush balance get it done professional cutting could be a little difficult

      ValenteM

      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      July 05, 2017

      Corsa quad extreme

      Easy install about a hour. The roush rear valance is what takes the time so be sure to leave a afternoon free to do it. All in all worth it the sound is badass almost euro sounding but screams when you get on it

      dee23

      Year: 2017 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      March 12, 2017

      A very distinct sound

      The install and directions were simple, easy to understand, and took less time than I had anticipated when I purchased it. Total time was less than 40 minutes; which included lifting the car with a hand jack and placing it on jack stands. Sound is amazing. Loud and clean with ZERO drone in the cab. Will recommend this to anyone with a street car.

      JeremyW

      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      December 26, 2016

      Quad Tip is the Way To Go!

      Everything fit perfectly with the Roush valance!!! Love the zero drone and how aggressive it sounds when I get on it! Overall great Exhaust and great look!

      S550VINCE

      Year: 2016 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      June 03, 2016

      Awesome!

      I love the way this sounds! I love the way this sounds! I love the way this sounds! I love the way this sounds! I love the way this sounds! I love the way this sounds! I love the way this sounds! I love the way this sounds!

      Mustanglover5

      Year: 2015 Submodel: GT

      Helpful (1)

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