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Xtreme Variable Sound Level (21001) 3.0 IN Valved Cat-Back Twin 4.0 IN Tips 2018-21 Mustang GT Coupe

SKU: 21001

8 reviews

SKU: 21001

Tip Finish

Technical specifications

Performance results aren’t guaranteed & may vary.
+23.43% Flow increase

CORSA's Patented RSC® Technology is designed for an AGGRESSIVE SOUND under acceleration and DRONE-FREE EXPERIENCE during cruise. Every exhaust system is engineered specific to each vehicle application in order to maximize performance and eliminate drone at cruise


2018-2021 Ford Mustang GT 5.0L V8
*For vehicles with Active Valve Exhaust Only


3.0" Cat-Back, Dual Rear Exit with Twin 4.0" Polished Pro-Series Tips
Xtreme to Touring Variable Sound Level
*Ideal for pairing with aggressive engine modification to control exhaust volume

Superior Sound Quality

The CORSA Active Valve, combined with RSC® Technology, is more effective than the stock system at providing a comfortable drone-free cruise. Utilize the quiet start function or run wide open; CORSA Active Valves produce an impressive 11 decibel delta in volume across the various driving modes. Increase an Axle-Back's sound and performance by adding the CORSA Double X-Pipe, Part Number 14327; which out flows the stock mid-section by 23.43%!

CORSA Active Valve Technology

Over two years of research went into developing a CORSA active valve exhaust system that would deliver the ultimate driving experience: a varying range of volume combined with No Drone RSC® Technology. The valves need to perform under various conditions; after testing many off-the-shelf valve solutions, a CORSA valve was built and torture tested in order to deliver the desired quality. It was subjected to intense heat cycling conditions and yielded no failures at well over half a million cycles. CORSA active valve technology meshes seamlessly into the Mustang GT valve operating system by maintaining the factory solenoids to ensure flawless functionality

  • Premium Stainless Steel Construction
  • Easy Bolt-on Installation
  • No Welding Needed
  • Patented No-Drone, Reflective Sound Cancellation (RSC®) Technology
  • Straight-through Design
  • Mandrel Bent
  • All Hardware and Detailed Instructions Included
  • Proudly Manufactured in Berea, Ohio


🗒️ Installation Instructions

YEARS: 2018, 2019, 2020, 2021

CORSA branded exhaust systems are backed by a Limited Lifetime warranty for as long as you own your vehicle with proof of purchase. (VIEW WARRANTY)

Every vehicle-specific CORSA product is engineered and designed to match the unique properties of the vehicle it is designed for to deliver perfect fitment and performance. CORSA does not recommend or recognize purchases and installations on unspecified vehicles.

Customer Reviews
5.0 Based on 8 Reviews
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    CORSA PERFORMANCE Xtreme Variable Sound Level (21001) 3.0 IN Valved Cat-Back Twin 4.0 IN Tips 2018-21 Mustang GT Coupe Review
    03 Oct 2020

    Great product

    The sound it’s awesome i’m happy with my purchase corsa performance club

    Allan G.
    United States United States
    20 Dec 2021

    Awesome exhaust system

    This exhaust is amazing. It definitely wakes up the coyote engine and gives that exotic rasp sound to the exhaust. Although this exhaust makes a huge sound difference from outside the vehicle, it’s still fairly quiet inside the vehicle with little to no drone.

    Jason H.
    United States United States
    27 Jun 2021


    Great change to the sound. Loud cold starts and feels louder inside the car. But, when you’re just cruising the sound is minimum inside. I drive with the valves open all the way everyday and there’s barely any drone. Total worth it.

    Jose M.
    United States United States
    20 Jun 2021


    apres avoir longuement hésité, j'ai choisi ce modele et je ne le regrette pas . le son est vraiment sublime !!! des que l'on monte dans les tours c'est fabuleux!!!

    France France
    31 Mar 2021

    2018 mustang gt active exhaust corsa extreme cat back

    The fitment of this product was great the quality of the pipes, and the sound is music to the ears! Corsa is the way to go for sure if you want quality and perfect fitment! It might be expensive but, don’t forget you get what you pay for!

    Robert I.
    United States United States
    28 Oct 2020

    Quiet mode doesn’t work

    All of the modes worked except Quiet mode

    Faisal A.
    Saudi Arabia Saudi Arabia