2015-2017 Mustang 2.3L EcoBoost ROUSH Quad Tip Active Exhaust Kit

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Part #: 421928

Financing available for purchases over $99 or more

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International Purchases & Shipping

Prices stated here are only for sales within the continental United States and ordered via the ROUSHperformance.com web site. Prices for other territories and countries may vary due to shipping fees, duties, and other factors.

Orders placed via ROUSHperformance.com can only be shipped to areas within the continental U.S. If you live outside the U.S., please orders must be placed through an authorized ROUSH dealer.

Product highlights for the 2015-2017 Mustang 2.3L EcoBoost ROUSH Quad Tip Active Exhaust Kit:

  • Requires ROUSH rear valance 421894 (w/o back up sensors) or 421919 (with back up sensors).
  • Fits Ecoboost Mustangs with premium chassis packages only (Trim levels - 200A/201A)
  • OE Quality Engineering and construction for long life
  • Dual Tip Mufflers
  • Fits 2015, 2016, and 2017 Mustang 2.3L EcoBoost
  • 4" Chrome flashed tips
  • Corrosion resistant 304 stainless steel
  • Full mandrel bending
  • Uses OEM hangars and mounting points
  • No welding required
  • Touring, Sport, Track and Custom settings for 4 exhaust "systems" out of the box
  • Custom programming feature through included WiFi OBD2 interface to Roush Apple iOS application
  • Allows nearly infinite exhaust tone configurations. "MAP" and build your own exhaust note!
  • Brushed Aluminum Console Mounted 4 Mode Selector Switch
  • Easy Plug and Play Installation
  • Includes all necessary wiring, modules, hardware, and instructions

Our ROUSH Active exhaust system puts you in control of your Mustang’s exhaust note. Stealthily pull out of your driveway without waking the kids by keeping your Active exhaust in touring mode. Switch to SPORT mode and open up your exhaust once you hit the open road. Using our ROUSH Quad Tip exhaust with mandrel bent T-304 stainless steel from the axle back and a high flow dual tip muffler as a base our proprietary Active Exhaust system uses data from your Mustang’s Powertrain control module, positioning its valves based on throttle position, RPM and speed. A brushed aluminum, console mounted, selector switch swaps sound modes on the fly. And our Active Exhaust app for iOS lets you create and edit sound maps for custom mode.

Download the ROUSH Active Exhaust App for iOS

Download instructions for the Active Exhaust app

The ROUSH Active Exhaust system features four modes: TOURING, SPORT, TRACK, and CUSTOM.

TOURING mode keeps the volume of your exhaust as quiet as possible. The exhaust valves stay closed all the time.

SPORT mode opens up under acceleration while keeping the exhaust quiet during normal driving conditions. Accelerator position RPM and vehicle speed are used to determine valve position.

TRACK mode has the valves wide-open the whole time without restricting your Mustang’s raw sound. This mode is intended for track use and is not legal for street use.

CUSTOM mode lets you create and edit custom sound maps with the ROUSH Active Exhaust iOS app. Using the app gives you control over the position of the valves based on vehicle speed, rpm and accelerator position.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
Application Mustang(2015/2016/2017)
Difficulty Novice
Time 4 hours 30 minutes
Tools Basic tools
Instruction URL Download Instruction Manual
Install Video URL No