Shimano FC-7800/M760 O-Ring for Crank SH-Y1F316000
|Shimano LH Crank Arm ring.
Part number 5 in the diagram
These can get lost during bottom bracket changes…
They are needed as they apply pressure to the bottom bracket bearing in the correct area.
As far as we are aware they fit any Hollowtech 2 shimano LH Crank..
Confirmed on SLX M7000, XT M8000, FC7600 and M760 crank arms…
Ref. Code: Y1F316000