The MRT STI Extreme Turbo-Back with Drone Management System, Non Catted has a loud, deep muscle car sound and is handcrafted in corrosion-resistant T304 Stainless Steel. Base systems include T304 polished SS quad 4" tips and 3" mandrel-bent tube. Black Ops black matte tip finish is available for an additional fee. This system is engineered for the best sound to match your WRX STI and provides increased performance from the increased exhaust flow. The
MRT Extreme Turbo-Back has enough elevated sound to Get Noticed, plenty of opportunities to Feel the Performance, and packaged in a design without an excessive drone. MRT has engineered a DMS (Drone Management System) to give this performance system the most pleasant ride experience.
*** Founded as part of MRT's racing heritage, this product is designed for off-road, race use only ***
Application: 2015 thru 2021 Subaru STI
Hear the Difference ![]()
How does it sound? MRT STI Extreme DMS Turbo-Backis the loudest and baddest sounding exhaust that is always "on."![]()
Is there drone or resonance? Some managed drone.![]()
What if I step on it? Wide-open throttle brings out an extreme exhaust roar that screams "take no prisoners."
Are you located close to Plymouth, MI and need your MRT aftermarket exhaust installed? Call MRT at 734-455-5807 to make an appointment today!
How does it sound? MRT STI Extreme DMS Turbo-Backis the loudest and baddest sounding exhaust that is always "on."
Is there drone or resonance? Some managed drone.
What if I step on it? Wide-open throttle brings out an extreme exhaust roar that screams "take no prisoners."
