Shimano Black Shimano Dura-Ace R9100 68mm bottom bracket 2024

Bottom Bracket. Threaded. HOLLOWTECH II. 68 mm shell width. With an advanced seal construction for smoother rotation and small ball bearings to minimize weight, the SHIMANO DURA-ACE bottom bracket is offered in both pressfit and threaded options.

• Bottom bracket with small ball bearings for lightweight
• Advanced seal construction for smoother rotation
• Average weight     65
• HOLLOWTECH II bottom bracket
• Threaded bottom bracket shell width: 68 mm
• Threaded bottom bracket shell width: 70 mm
• Small ball bearing