MRT Extreme Turbo Back Exhaust Non Catted with DMS (98P114) - 2015-2021 Subaru STI
Take your Subaru STI to the absolute limit with the MRT Extreme Turbo Back Exhaust system. Designed for serious enthusiasts and track-focused builds, this non-catted system delivers an aggressive, always-on exhaust note paired with maximum performance gains.
Constructed from premium T304 stainless steel and featuring full 3 inch mandrel-bent tubing, this turbo-back system is engineered to maximize exhaust flow while reducing backpressure. The result is improved horsepower, torque, and throttle response across the RPM range. MRT’s Drone Management System (DMS) helps keep interior drone under control, allowing you to enjoy the extreme sound without sacrificing drivability.
Features
- Full turbo-back exhaust system with no catalytic converters
- Extreme, aggressive exhaust tone that is always on
- 3 inch mandrel-bent tubing for maximum exhaust flow
- Straight-through design reduces restriction and boosts performance
- Integrated Drone Management System (DMS) minimizes cabin drone
- Improves horsepower, torque, and throttle response
- Quad 4 inch double-wall polished stainless steel tips
- Optional Black Ops matte black tip finish available
- Constructed from corrosion-resistant T304 stainless steel
- Designed for high-performance and track applications
- Direct bolt-on installation with standard tools
- Engineered and manufactured in the USA
- Limited lifetime warranty
Additional Notes
- Loudness rating: 9 out of 10
- Drone level: 2 with DMS for controlled cabin sound
- Performance rating: 9 out of 10
- No catalytic converters included (non-catted system)
- Designed for off-road and race use only
Fitment
- 2015 Subaru WRX STI 2.5L Turbo
- 2016 Subaru WRX STI 2.5L Turbo
- 2017 Subaru WRX STI 2.5L Turbo
- 2018 Subaru WRX STI 2.5L Turbo
- 2019 Subaru WRX STI 2.5L Turbo
- 2020 Subaru WRX STI 2.5L Turbo
- 2021 Subaru WRX STI 2.5L Turbo
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov
