Shimano Dura-Ace R9100 Hollowtech II - English Bottom Bracket

Shimano Dura-Ace BB92, BB9000 Hollowtech II Bottom Brackets Bottom bracket with small ball bearings for lightweight Advanced seal construction for smoother rotation

• Spindle Interface Type: Shimano Hollowtech II
• BB Shell Width (mm): 68
• Bottom Bracket Shell I.D.: 1.37
• Defined Color: Black
• BB/Frame Interface: English
• Weight: 65

• Manufacturer Part Number: IBBR9100B
• UPC: 689228858619