Diabolus exhaust pipe (Super-Black) for BMW R9T 2016 - 2020 (2 sensors) and 2021 - 2023 (3 sensors) Can be used together A model developed from our famous BMW R9T exhaust design, the new "Super Black" model. This product code is for R9T users from 2016 - 2020 (2 sensors) and 2021 - 2023 (3 sensors).**Note: BMW R9T2016 - 2020 (2 sensors) will have a 3rd sensor blocking nut installed. *No Silencer Sound Test Video: https://youtu.be/xrOFKLYqgp4 Installation Warning: Please complete the exhaust installation before you start the engine to prevent the warning light show.