• Shimano BB-MT800, XT 8000 series Hollowtech II bottom bracket, IBBMT800B, for MTB cranks
• BSA, 68/E/73mm BB shell
• 24mm spindle, Steel bearings, Black
• Compatible with all mountain Hollowtech II cranks
• Shimano BB-MT800, XT 8000 series Hollowtech II bottom bracket, IBBMT800B, for MTB cranks
• BSA, 68/E/73mm BB shell
• 24mm spindle, Steel bearings, Black
• Compatible with all mountain Hollowtech II cranks