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.
Bottom bracket with small ball bearings for lightweight
Advanced seal construction for smoother rotation
PRODUCT SPECIFICATIONS
MODEL NO - BB-R9100
SERIES - DURA-ACE R9100 Series
Average weight - 65 g
Threaded BB shell width_70mm ✔
HOLLOWTECH II BB_Threaded BB type ✔
Small ball bearing ✔
Threaded BB shell width_68mm ✔