Shimano BB-R9100/BB-R9100I Dura-Ace Threaded Bottom Bracket 68/70mm Shell Width Size:70mm Polypropylene MATERIAL - RAIL

Polypropylene MATERIAL - RAIL

For XDR 12-speed cassettes

10-tooth start helps provide a wider gearing range

The BUZZYBEE H2 is entirely suitable for carbon frame bikes

Shimano BB-R9100/BB-R9100I Dura-Ace Threaded Bottom Bracket 68/70mm Shell Width Size:70mm Polypropylene MATERIAL - RAILSHIMANO DURA ACE Threaded Bottom Bracket 68 70 mm shell width BB R9100 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 with small ball bearings for lightweight Advanced seal construction for smoother rotation PRODUCT