SHIMANO DURA-ACE - Bottom Bracket - Threaded - HOLLOWTECH II - 68/70 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.

Features

• Bottom bracket designed with small bearings for weight reduction
• Advanced seal construction for smoother rotation

• Product code: IBBR9100B
• Item Number: BB-R9100