2015-21 Subaru WRX/STI MRT Extreme Cat Back Exhaust

For drivers who love the extreme performance of the Subaru WRX and STI trims, we engineered the MRT Extreme Cat Back Exhaust to match. The MRT Extreme CatBack system offers our loudest, baddest sounding exhaust that is always "on." The MRT WRX/STI Extreme Cat-Back has a loud, deep muscle car sound at idle and when you step on it, a wide-open throttle brings out an extreme exhaust roar that screams "take no prisoners." Handcrafted in corrosion-resistant T304 Stainless Steel with 3" mandrel-bent tubing to increase exhaust flow, the performance gains and quality of the system stand out. Base systems include T304 polished SS quad 4" tips; a Black Ops black matte tip finish is available for an additional fee. The MRT Extreme has enough elevated sound to Get Noticed, plenty of opportunities to Feel the Performance, and packaged in a design with minimal drone. Designed to fit stock J-Pipe.

Although designed to fit your stock J-Pipe, for the drivers who want even more extreme performance, MRT offers an MRT Street Race J-Pipe without Catalysts (92P116) and an MRT Performance Mid-Pipe (92P117, requires use of MRT J-Pipe) to continue the full 3-inch system from the turbo to the tips (WRX trim only). No tune required.

This product is designed for off-road, race use only.
Application: 2015 thru 2021 Subaru WRX and STI. Designed to fit stock J Pipe.

Hear the Difference

• How does it sound? The MRT WRX/STI Extreme Cat-Back #92P114 to stock downpipe has a balanced, deep muscle car sound.
• Is there drone or resonance? The drone is noticeable but tolerable.
• What if I step on it? Wide-open throttle increases exhaust loudness and tone to an aggressive performance sound.

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!