Installation Time
(approx) 1 Hour
Difficulty Level:
Light to Moderate mechanical skill required.
FREE 1 to 3-Day Delivery on Orders $149+ Details
Roush Axle-Back Exhaust
(18-23 Mustang GT w/o Active Exhaust
Item 404877
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Product Information
Features, Description, Reviews, Q&A, Specs & Installation
Features & Specs
- Aggressive, Raspy Exhaust Note
- Unique Open-Chambered Muffler Design
- 304 Stainless Steel Construction
- Full Mandrel-Bent Tubing
- 4" Quad Tips with Chrome Flashing
- Fits 2018-2023 GT Mustangs Not Equipped with Factory Active Exhaust
| Brand | Roush |
| Exhaust System Type | Axle-Back System |
| Exhaust System Material | Stainless Steel |
| Exhaust System Tip Finish | Chrome, Polished |
| Exhaust System Tubing Diameter | 3.00 Inch |
| Exhaust Loudness | Aggressive |
Description
Aggressive Raspy Sound. Designed for 2018-2023 GT Mustangs that are not equipped with the factory Active Exhaust, this Roush Axle-Back Exhaust will let everyone know you have arrived with its aggressive raspy sound. This innovative new Roush exhaust system features a hollow open chamber muffler that results in increased air flow and a unique sound, with no in-cabin "boom" normally found with performance exhaust at cruising speeds.
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.
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 Axle-Back Exhaust System is designed to fit 2018-2023 GT Mustangs that are not equipped with active exhaust from the factory.
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.
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 Axle-Back Exhaust System is designed to fit 2018-2023 GT Mustangs that are not equipped with active exhaust from the factory.
Roush 422097
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Install Details & What's in the Box
Installation Info
What's in the Box
- (1) Exhaust Kit V8 5.0L - P/N: 1318-5231ORR
- (1) Muffler Assembly - LH - P/N: 1315-5232ORR
- (1) Muffler Assembly - RH - P/N: 1315-5230ORR
- (1) Exhaust Tips LH (Y-Tip) - P/N: 1318-5255LH
- (1) Exhaust Tips RH (Y-Tip) - P/N: 1318-5255RH
- (2) Clamp - Muffler to Tip - P/N: 10-0338
- (2) Clamp - Muffler to Mid-pipe - P/N: 94-0053
- (1) Online Installation Instructions - P/N: 1315-P1INST
- (1) Exhaust Kit - P/N: 1318-5231ORR23
- (1) Muffler Assembly - LH - P/N: 98-66-BA
- (1) Muffler Assembly - RH - P/N: 98-67-BA
- (2) Exhaust Tips (Round, Bevel Edge) - P/N: 1315-ORRTIP
- (2) Clamp - Muffler to Tip - P/N: 10-0338
- (2) Clamp - Muffler to Mid-pipe - P/N: 94-0052
- (1) Online Installation Instructions - P/N: 1315-P1INST
Tech Guides:
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- What Is Active Exhaust? Benefits, Modes & Upgrade Guide
- How to Improve Your Car's Exhaust Sound
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- Do Exhaust Systems Affect Fuel Efficiency?
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- Top 5 Loudest Exhaust Systems for Your Mustang
- What are the Performance Benefits of Upgrading to a Cat-Back Exhaust
- 2024 Mustang Exhaust Guide
4.8
Customer Reviews (500+)
Questions & Answers (12)
Will It Fit My Mustang
- GT - 18, 19, 20, 21, 22, 23
