Shimano Bottom Bracket BB-R9100 Dura-ace Italian 70mm Airbrake MX Extended inner plate improves chain

Extended inner plate improves chain engagement and retention

and extended trail time

Weight: 379g (Steel Axle)

Frame Grab Knob replacement part for JustClick and FoldClick

Find all the documentation needed to set up

Shimano Bottom Bracket BB-R9100 Dura-ace Italian 70mm Airbrake MX Extended inner plate improves chainThis Shimano Dura Ace R9100 Bottom Bracket, utilising Hollowtech II technology, has smaller lightweight bearings and an advanced seal construction for smoother rotation and increased durability. Outside positioned bearings are for better weight distribution and more stability. Series: DURA ACE . BB Shell Width: 70mm . Bottom bracket with small ball bearings for light weight . Advanced seal construction for smoother rotation . Cups Material: aluminium