2024-2025
2015-2023
2010-2014
2005-2009
1999-2004
1994-1998
1979-1993
Installation Time
(approx) 5 Hours
Difficulty Level:
Light to Moderate mechanical skill required.
Installation Guides
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Find Axle-Back Exhaust for your Mustang
Roush Active Axle-Back Exhaust (18-23 Mustang GT w/o Active Exhaust)Find parts that fit my vehicle
Item 404878
Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features
- ROUSH Active Axle-back Exhaust System
- Select Between Touring, Sport, Track and Custom Exhaust Notes
- Custom Programming with Included WiFi OBD2 Interface and Roush iOS App
- Unique Open-Chambered Muffler Design
- 304 Stainless Steel Construction
- Full Mandrel-Bent Tubing
- 4" Stainless Steel Quad Tips With Chrome Flashing
- Cut & Clamp Installation
- Fits 2018-2023 GT Mustangs Not Equipped with Factory Active Exhaust
Description
ROUSH Active Exhaust System. Designed for use on 2018-2023 GT Mustangs that are not equipped with the factory Active Exhaust, this Roush Active Exhaust Axle-Back will let you take full control of the volume and performance of your S550 GT Mustang. Roush's proprietary Active Exhaust system ties directly into your Mustang's powertrain control module, opening and closing the mufflers valving based on throttle position.
Four Distinct Exhaust Sounds. The ROUSH Active Exhaust System includes a center console mounted selector knob that allows you to easily switch between four different sound modes on the fly. Choose from Touring, Sport, Track, and Custom.
Cut & Clamp Installation. The installation of this Roush Axle-Back Exhaust will require cutting and removing the factory muffler assemblies and clamping the new muffler assemblies in place. Clamps and instructions are provided.
Application. This Roush Performance Active Axle-Back Exhaust System is designed to fit 2018-2023 GT Mustangs that are not equipped with the factory installed active exhaust.
Four Distinct Exhaust Sounds. The ROUSH Active Exhaust System includes a center console mounted selector knob that allows you to easily switch between four different sound modes on the fly. Choose from Touring, Sport, Track, and Custom.
Touring. The Touring mode closes the mufflers valves completely keeping the exhaust volume to an absolute minimum.Quality Roush Construction. Roush manufactures their exhaust systems from mandrel-bent 304 stainless steel for durability and corrosion resistance. This Axle-Back Exhaust features two unique open chambered mufflers that improve exhaust flow. The system includes two dual wall 4 inch quad tips that are finished in a new chrome flashing process that is resistant to exhaust heat discoloration.
Sport. The Sport mode keeps the exhaust quiet during normal driving conditions. Accelerator position and vehicle speed are used to determine valve position, opening up under acceleration for a more aggressive sounding ride.
Track. The Track mode is wide-open. This mode keeps the exhaust tailpipe valves fully open at all times and doesn't restrict the raw sound of your Mustang. This mode is intended for track use and is not legal for street use.
Custom. The Custom mode lets you create a custom sound map with the included WiFi OBD2 interface and ROUSH iOS application to personalize the exhaust sound to your own tastes. With the app you gain full control over the position of the valves based on vehicle speed, rpm and accelerator position. Download the free ROUSH Active Exhaust App for iOS - Here
Cut & Clamp Installation. The installation of this Roush Axle-Back Exhaust will require cutting and removing the factory muffler assemblies and clamping the new muffler assemblies in place. Clamps and instructions are provided.
Application. This Roush Performance Active Axle-Back Exhaust System is designed to fit 2018-2023 GT Mustangs that are not equipped with the factory installed active exhaust.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Exhaust Pipe with Valve – LH
- (1) Exhaust Pipe with Valve – RH
- (1) Flashed Controller, Active Exhaust
- (1) Vehicle Ready Wiring Harness
- (1) OBDII Active Exhaust Programmer
- (1) Hardware Kit – Active Exhaust
- (1) Switch, Mode Selector
- (1) Switch Plate, Metal with Engraving
- (1) Switch Bracket
- (2) Bolt – M4 x 0.7 x 10
- (2) Push Nut – 3/16”
- (3) Washer – M4 Nylon
- (7) Zip Tie with Edge Clip
- (1) Knob, Knurled Style
- (1) Set Screw – M3 x 0.5 x 6
- (1) J-Clip – M6
- (1) Bolt – M6 x 31 HEX
- (2) Foam Tape 30 mm x 35 mm x 7.9 mm
- (1) Micro Fuse – 10 AMP
- (20) Zip Tie – 7”
- (1) Multipurpose O-Ring, 5.6 mm
5.0
Customer Reviews (2)
Reviews of Roush Exhaust products have an average rating of 4.8 out of 5
