SHIMANO DURA ACE B.B.-SM-BBR9100 (BSA) and BBR9100 (ITA)Bottom bracket with small ball bearings for lightweight Advanced seal construction for smoother rotation Available in English (BSA) or Italian threading BB Shell Width: 68mm 70mm Average Weight: 65g

Fits handlebar diameter from 17

Largest Sprocket: 30 Tooth

EAN code    4524667416388

FORWARD POSITION

Enough clearance with our direct mount brake caliper

Threaded BB shell width_68mm: Yes

Recommended for a variety of scenes

One unique feature on XT

The FD-R7100 front derailleur is characterized not only by a light

Wide links allow for quick shifting and buffer the pivots for durability and to maintain crispness over time

Cage Material -

Color：Black / Silver / Gold