Remark Boso Edition Axleback Muffler Deletes | 2015-2019 Subaru WRX/STI2015 2019 Subaru WRX STI Boso Edition Axleback Muffler Deletes by Remark Inspired by the Japanese, Bszoku style. They are the outlaws of Japan, and known as the "Violent Speed Gang". The outrageous styling, and designs of their JDM vehicles are very iconic with the huge exhaust system and a very LOUD aggressive tone. Features Direct bolt on easy installation to the factory OEM or Remark mid Y pipe Ultra aggressive 3. 5inch quad tips 2. 5inch, 16 gauge