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2018-19 Mustang Roush Active Exhaust Kit GT by Roush

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  • Roush Mustang Active Exhaust Kit (2018) 5.0 422100
  • Roush Mustang Active Exhaust Kit (2018) 5.0 422100
  • Roush Mustang Active Exhaust Kit (2018) 5.0 422100
  • Roush Mustang Active Exhaust Kit (2018) 5.0 422100
Roush Mustang Active Exhaust Kit (2018) 5.0 422100
  • Roush Mustang Active Exhaust Kit (2018) 5.0 422100
  • Roush Mustang Active Exhaust Kit (2018) 5.0 422100
  • Roush Mustang Active Exhaust Kit (2018) 5.0 422100
  • Roush Mustang Active Exhaust Kit (2018) 5.0 422100

Easily adjust the sound of your exhaust with the 2018-2019 Mustang 5.0 Roush Active exhaust system!

Item #RSH-422100
MPN# 422100

Everyday Low Price: $2,849.99

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  • Adjustable Sound
  • Driver Controls Volume
  • Plug & Play Installation
  • Roush Quality
  • Syncs To Smart Phone


  • Touring, Sport, Track & Custom Settings
  • 4" Stainless Quad Tips
  • 304 Stainless Steel Construction
  • 4 Mode Selector Switch
  • Dual High Flow Mufflers

What's in the Box

  • (1) Roush Active Exhaust Kit
  • (1) Installation Hardware Kit
  • Installation Instructions

Roush Brand Image

Product Description

Roush Quad Tip Active Exhaust System
Give your S550 the ultimate exhaust with this 2018-2019 Mustang 5.0 Roush active exhaust system! This exhaust kit allows you to control the sound of your exhaust from inside the car. There are four settings including a custom setting so you can dial in the sound exactly how you want it. Choose Touring mode to keep your Mustang quiet on long trips, or Track mode to free up power and sound at the race track! This kit is a direct fit including plug and play electronics for an easy installation. No matter what sound you like, there's a setting for you with the Roush Active Exhaust system.

Roush Quality
Roush is known for exceptional quality that meets or exceeds OEM standards and this Roush active exhaust system is no exception. This kit is constructed using 3" mandrel bent, 304 stainless steel that resists corrosion for long-lasting performance. OEM hangers and mounting points are utilized to mount the quad tip mufflers. The four exhaust tips are chrome flashed 4" tips that fill out the rear valance. The brushed aluminum selector switch mounts to your console for a factory style installation.

Roush Active Exhaust Settings
This 2018-2019 Mustang GT Roush Active Exhaust system is essentially four mufflers in one. With the turn of a dial, you have your choice of Touring, Sport, Track, or Custom exhaust sound.

Touring:The Touring mode closes the exhaust valves all the way which keeps the exhaust volume to absolute minimum.

Sport:The Sport mode will keep the exhaust quiet during normal driving conditions. The valve position is determined by accelerator position and vehicle speed. The valve will open up under acceleration for a more aggressive sounding ride.

Track:The Track mode is wide-open. This mode will keep the tailpipe valves fully open at all times which doesn't restrict the raw sound of your Mustang. This mode is intended for track use and not legal for street use.

Custom:The Custom mode lets you create your own custom sound. Using Roush's iOS application, this allows you to personalize the exhaust sound to your specific taste. The app allows you to gain full control over the position of the valve based on vehicle speed, RPM, and accelerator position.

Plug & Play Installation
Roush's Active Exhaust system features full plug and play electronics. This kit includes all necessary wiring, modules, hardware and detailed instructions for an easy installation. The programming includes WiFi OBD2 interface that is used with Roush's Apple iOS application found on the app store. This is where you control the Custom exhaust setting. Roush's proprietary Active Exhaust system ties in with your Mustang's powertrain control module which lets the valves open based on throttle position.

Application Note
This axle Roush Active exhaust kit is designed for Mustangs that were not equipped with the active exhaust option.

-Fits 2018-2019 Mustang GT Coupe and Convertible

ROUSH® Limited Warranty - Click Here

California Residents:
WARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

Product Videos

2018 Mustang GT Roush Active Exhaust - Sound Clips

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

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Vehicle Applications

Ford Mustang - 2018 (18)

About This Brand

Roush - The Art of Performance Engineering
ROUSH Performance is the first specialty-vehicle company to combine race-proven technologies with advanced automotive engineering. The result, a unique mix of street car and race car...Is a ROUSH car. Or more specifically, a ROUSH Mustang or F-150 pickup with styling, performance, and handling characteristics derived from the racetrack and modified for street legal usage. The vehicles and components produced by ROUSH Performance are imprinted with Jack Roush's vision, passion for performance, and commitment to excellence. He personally approves the design, engineering, fit, finish and overall performance of each package, ensuring that his personal standards are met prior to production and product release. Many of these products are designed by the same engineering group that has helped Roush Racing become the winningest Ford racing team in history.

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