What is that rod for that runs parallel to the fork on the left 2019 Yamaha motogp bike?

https://www.cycleworld.com/sites/cycleworld.com/files/styles/2000_1x_/public/images/2019/02/2019_yzr-m1_12_46_02.jpg?itok=VHlgP4_z&fc=50,50 via /r/motorcycles https://www.reddit.com/r/motorcycles/comments/auxud0/what_is_that_rod_for_that_runs_parallel_to_the/?utm_source=ifttt