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Corsa Xtreme 3 in. Cat-Back Exhaust w/ Polished Quad Tips (15-17 GT Premium Fastback; 18-19 GT Fastback w/o Active Exhaust)

Market Price $1,849.81 You Save 12% ($212.81)
Our Price

$1,637.00

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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 2015-2017 Premium Package GT Fastback Mustangs equipped with a Roush Rear Valance
    • Fits 2018-2019 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 2018-2019 Fastback GT Mustangs that is not equipped with the Active 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 Details

    CA Residents: Warning: California's Proposition 65

    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?

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    Questions & Answers (5)

    5 Top Rated Questions

    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.

    • 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.

    Helpful (3)

    Is this legal in california?

    • 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.

    Helpful (1)

    Will this fit the base model for 2018 GT

    • It will fit all 2018-2019 GT Fastback models without the Active Valve Exhaust System.

    Helpful (0)

    The page says that this will fit a 2015 GT premium but will it fit a base GT if you also add the roush rear valence?

    • Unfortunately it will not fit a base model 2015 GT due to the different chassis it will have.

    Helpful (0)

    Will this catback system fit with the GT350 rear valance?

    • 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

    Helpful (0)
    Post Your Question

    People Who Bought This Item Also Bought

    Customer Reviews (27) Write a Review

    Overall Rating 5

    out of 5 stars

    Installation Time:Afternoon

    Installation Cost:$100-$250

    • Loudness / Volume 4.962963 5.0
    • Exhaust Note 4.888889 4.9
    • Fit & Finish 4.777778 4.8
    • Bang For Your Buck 4.666667 4.7



    • 5/5

      November 07, 2018

      Loud and Aggressive

      Very happy with this exhaust. High quality and very loud.

      sinister281

      Year: 2018 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      November 04, 2018

      Beautiful looking and sounding

      This exhaust was worth the money! Sounds amazing, yet its quiet when you want it to be. Cruise on the highway and you wouldn't even know it's back there... Open it up, and everyone within a mile will. I've noticed more with this exhaust over other exhausts that its volume varies more with engine load rather than linear with rpm increase. You can cruise at 5k and it's not all that loud. Which can really be one of the only drawbacks I can say that exists with this exhaust. If you like to get noticed around town without making it look like you're trying to, then perhaps this system isn't for you. Because of Corsa's RSC technology you have to put load on the engine for it to make that distinct aggressive corsa sound otherwise it's actually pretty quiet. Not much louder than stock really. But I like the shock factor when someone tries to race me and suddenly can't hear their own engine to know when to shift. It is that loud! The other small issue is that with the quad tip option, the way the tips split into two separate tips on each side isn't very efficient. A significantly greater amount of exhaust exits the main tip vs the second tip. This causes the main tips to get carbon build up unevenly compared to the second tip quite quickly. I drive my car for short pleasure cruises a couple of times a week only. I also wash my car once a week. After only a couple of drives the main tip is blackened from carbon yet the second tip is still shiny. Not a problem, but just a little offputting. All in all perfect exhaust!

      Kevin

      Year: 2018 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      October 16, 2018

      Hands down... the best

      It’s shiny, it’s loud (when u want to melt the ears of everyone), quiet... after it warms up... not in the morning when it’s cold and you cold start it... and pairs well with the roush intake. Also, autos are for sissy’s... a stick really let’s this be heard.

      LindseyM

      Year: 2018 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      October 16, 2018

      Corsa Cat-backs

      fairly easy to install. Sound and quality is well worth the price.

      ChaseG

      Year: 2015 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      September 28, 2018

      Great Exhaust!

      Sounds great and looks incredible! I've been looking at this exhaust before i even bought the car. Definitely worth the wait , the exhaust note is super aggressive!

      EliasH

      Year: 2018 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Afternoon

      September 19, 2018

      Bang for buck!

      Best exhaust hands down. Beautiful sound and people know when you’re coming!

      EricM

      Year: 2018 Submodel: GT

      Helpful (1)

    • 5/5

      Installation Time: Less than 1 Hour

      September 12, 2018

      CORSA EXTREME

      Ordered exhaust and kit arrived promptly. Once the car was on the hoist, removal and installation was easy and straight forward, only issue being as others had mentioned, that the fitment of the passenger side quad tip exhaust coming too close to the valance. Modification of the passenger side hanger and multiple adjustments were necessary to overcome the fitment concern, which I wouldn't expect from a kit of this cost and quality. Once on the vehicle, sounds great and delivers on all of the claims that they promise.

      MattH

      Year: 2018 Submodel: GT

      Helpful (2)

    • 5/5

      Installation Time: Afternoon

      July 20, 2018

      Top-Notch Quality, Superb Sound

      Ever since I had considered buying an S550 Mustang, I had my heart set on the Corsa Xtreme. Recently purchased my Lightning Blue 2018 Mustang GT and as soon as I drove home from the dealership I ordered the Corsa. It arrived 6 days later, since I live in Phoenix. I couldn't even wait, got home from work around midnight and got to work. Took 2 hours to install and then my Mustang was making loud noises :) . I do apologize to the neighbors for revving at 2am! So long story short, if you want the highest quality, the best sounding catback exhaust for your Mustang GT, do not look any further!

      Paul

      Year: 2018 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Less than 1 Hour

      June 28, 2018

      Loud when you want it.

      Stalled on this purchase and do not know why, well worth it. It’s louder, especially at cold starts, but once it’s warmed up it has a deep but almost stock rumble. When you’re driving there’s no drone and it’s relatively quiet at the lower RPM’s but when you get on the gas it’s beautiful. You hear the crackles at downshifting and the gurgling at cruising in a lower gear. The figment could’ve been a little more spaced, there’s a bit of room on the sides of the diffuser but I have an ‘18 and the stock body will make it look like that. Much love.

      Alex

      Year: 2018 Submodel: GT

      Helpful (3)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      June 14, 2018

      Corsa Xtreme

      Product came in fast. It’s exactly how people explained it. Loud when you want it , quiet when you don’t. Videos do no justice of how loud it can get and how good the sound is. The chrome finish really looks nice and I like seeing the corsa over the top of the tips everytime I look at it. The only con would be the price, but I mean you’re getting what you pay for.

      PrincetonP

      Year: 2018 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      June 10, 2018

      No More Sewing Machine

      After getting harassed by Camaros and Challengers in my sewing machine sounding stock C/S GT, like everyone else I spent hours of research on line and was pretty much leaning toward the GT350 exhaust with Borla Sport catback. Wasn't crazy about the look of pipes exiting into the valence tips though. Ran across the Corsa Extreme catback on a late night research session and read all the reviews and decided "to go big or go home". Had a shop install it for $100 in about 45 minutes (I had previously had a Roush quad rear valence installed). Absolutely love the sound and look of this exhaust. Its loud like all the reviews say but pretty quiet when you want it to be. Although the wife said she thought it was a helicopter over the house when I cold started it for work the first morning LOL. Sounds great while upshifting and downshifting and best of all I have not been harassed since installing this exhaust. Highly recommend.

      FrankD

      Year: 2016 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Less than 1 Hour

      May 29, 2018

      Loud!!

      This exhaust is very aggressive and loud. I had a 2017 Mustang GT with the Borla ATAK catback on it and it was not as loud as the Corsa. Both systems were top notch quality and provide zero drone! Cold Starts will rattle your neighbors windows, but once it warms up you can cruise comfortably and hear your factory radio. Great system for those wanting to hear all 5 liters of badassery from their Mustang

      Carson

      Year: 2018 Submodel: GT

      Helpful (4)

    • 4/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      May 15, 2018

      Corsa Extreme

      Ordered my Corsa Extreme and got it within a few days. Immediately put it in the car and headed over to get the exhaust installed. It took about an hour and a half and the passenger side of the exhaust was having a tough fitment, it kept touching/rubbing the valance so a little bending had to be done. Aside from that, the exhaust sounds GODLY. It gets pretty raspy but it still sounds really really good. Couldn’t have been happier besides the fitment.

      Kyle35

      Year: 2018 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      April 20, 2018

      Coyote howl

      This exhaust is what every mustang needs. Cold starts are awesome! Super loud! Loud when accelerating but quite on the highway with no drone. If you're looking for a good exhaust this is it.

      Angel70

      Year: 2018 Submodel: GT

      Helpful (5)

    • 5/5

      Installation Time: Afternoon

      April 19, 2018

      Stop stalling and pull the trigger!

      This is my second Corsa Xtreame exhaust within the past a year. I traded in my 2017 for a 2018 w/ ppack. I love this system, it unleashes the roar of the coyote engine. The 2018 is a little louder, with a slightly more aggressive note than the 2017. Stop stalling and pull the trigger...and every time you start your car, the smile fill cramp your face!

      GothamEMS

      Year: 2018 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Shop Install

      Installation Cost: $100-$250

      April 08, 2018

      GREAT looking exhaust and GREAT sounding exhaust

      This is a great looking exhaust! There is no drone, and when you are sitting at a red light the car sounds almost stock. But when you get on the gas it comes to life! Very happy with this purchase on my 2015 GT.

      JohnM

      Year: 2015 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      March 28, 2018

      Beast Mode

      If you want that loud dominant roar of the beast.....this is it. Easy install. Great sound. Very pleased!

      RobJ

      Year: 2018 Submodel: GT

      Helpful (4)

    • 5/5

      Installation Time: Less than 1 Hour

      February 27, 2018

      Sick sound

      One of the best catbacks for the coyote hands down regardless of gen.

      ClaudioB

      Year: 2018 Submodel: GT

      Helpful (4)

    • 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 (4)

    • 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 (5)

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