SHOCK SHAFT Dia8 M6xL40 Also used in combo unit 913800-011 Sold individually 2019 Fluid FS MKIII - Upper shock shaft 2019 Sight Carbon VLT 27.5 - lower shock shaft 2020 Sight Carbon VLT 27.5 - lower shock shaft 2020 Revolver FS - Upper shock shaft 2020 Fluid FS MKIII - Upper shock shaft 2021 Revolver FS - Upper shock shaft 2022 Fluid FS Alloy - Upper shock shaft 2023 Fluid FS Carbon - Upper shock shaft The nut that matches this bolt is 913700-004.