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Roush Mustang GT Non-Active to Active Exhaust Conversion Kit (2018-2021)

$121.00 (4%)
Roush 422100 active exhaust kit lets you convert your Mustang's non-active exhaust to an active exhaust. The Roush kit supports 3 preset modes and a single custom exhaust mode that can be tuned through their app.

Part Number: 531 422100
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The Roush Mustang GT Non-Active to Active Exhaust Conversion Kit gives your Mustang an adjustable and customizable exhaust system that is unlike anything on the market. Unleash a vicious sound when you want, or quiet it down to a stock-like volume. 

Top of the line. This system is one of a kind. Manufactured from T304 stainless steel, this system spares no expense and is corrosion resistant. No welding is required and the system is made with a plug-and-play installation.

4 in One. Out of the box are 3 preprogrammed exhaust modes. Touring is a quiet stock-like volume. Sport balances between Touring and Track, utilizing vehicles speed and throttle position to adjust the exhaust valves. This lets you cruise quiet and get rowdy when you put your foot down. Track mode is meant for the track and holds the exhaust valve wide open for a vicious sound and loud volume. A fourth exhaust mode is a custom option that is tuned and customized through the Roush IOS app. 

Custom sound. The custom sound feature can be controlled completely through the Roush iOS app. The app connects to the exhaust system via an included WiFi OBD2 interface. Exhaust tone can be mapped and adjusted to almost infinite configurations. 

Features & Benefits: 
  • OE-quality
  • T304 construction
  • Polished tips
  • 4 exhaust modes
  • Custom exhaust tuning
  • Plug and play wiring
  • No weld design
  • Aluminum console-mounted switch
  • LED fault indicator light
  • High-flow mufflers
  • Quiet touring mode
  • Variable sport mode
  • Rowdy track mode
  • Tunable custom mode

CA Residents: Cancer and Reproductive Harm WARNING

Fitment & Features

Manufacturer: Roush

Installation Information:
Level of Difficulty: Tech Recommended
Install Time: About 4 Hours
Tools Required: Trim tool, tape measure, scissors, masking tape, center punch, marker, drill, drill bits, Phillips head screwdriver, flat head screwdriver, side cutters, exhaust pipe cutting tool/reciprocating saw, ratchet, ratchet extension, metric deep sockets, standard sockets, torque wrench, small pick, razor blade, deburr tool, Motorcraft corrosion inhibitor (p/n: PMP-19500-6000)

Vehicle Fitment:
Fits Trim Levels: GT
Fits Model Years: 2018, 2019, 2020, 2021
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