MRT Street Race Axle Back Exhaust (91U921) - 2018-2023 Mustang GT
Unleash a more aggressive side of your 2018-2023 Mustang GT with the MRT Street Race Axle Back Exhaust. Designed for drivers who want a bold, always-present exhaust tone, this system delivers a deep, commanding muscle car sound that stands out at idle, cruising, and wide open throttle.
Built from premium T304 stainless steel, this axle-back system features 2.5 inch mandrel-bent tubing and a straight-through muffler design to improve exhaust flow and enhance performance. The result is a louder, more aggressive tone compared to Sport Touring systems, while still maintaining MRT’s focus on minimizing unwanted drone. Finished with dual 4 inch double wall tips, this system provides a clean, aggressive rear profile with optional Black Ops matte finishes available.
Engineered specifically for Mustang GT models equipped with factory exhaust valves, this system includes MRT Power Plates to simulate valve operation. This eliminates the need for factory valve components while preventing check engine lights and improving overall exhaust flow for better performance and sound.
Features
- Aggressive, high-output muscle car exhaust tone with constant presence
- Louder than Sport Touring systems for enhanced sound and performance feel
- Straight-through muffler design improves exhaust flow and efficiency
- 2.5 inch mandrel-bent tubing reduces restriction
- Constructed from corrosion-resistant T304 stainless steel
- Dual 4 inch double wall exhaust tips with beveled edges
- Optional Black Ops matte tip finish available
- Includes Power Plates to simulate factory exhaust valves and prevent CEL
- Engineered to balance aggressive tone with controlled drone
- No tuning required for installation
- Direct bolt-on system for quick installation
- Designed and manufactured in the USA
Additional Notes
- Loudness rating: 8 out of 10
- Drone level: mild and controlled
- Performance rating: 6 out of 10
- Fits coupe and convertible models
- Replaces factory exhaust system for improved flow and sound
- Limited lifetime warranty included
Fitment
- 2018 Ford Mustang GT
- 2019 Ford Mustang GT
- 2020 Ford Mustang GT
- 2021 Ford Mustang GT
- 2022 Ford Mustang GT
- 2023 Ford Mustang GT
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
