Shimano FC-M645 Zee Single speed Crankset with Samox Bottom Bracket

Durable, strong, and aggressive style. Designed for freeriders or downhillers that do not have an unlimited sponsorship budget.

104mm BCD single speed rings designed for 10 speed drivetrains

Includes (used) Samox BSA 68/73mm bottom bracket (with 2 spacer rings) you’ll need one more if not using a BB mounted chain guide on a 68mm shell. On a 73mm shell 2 is fine. Search on Google for mounting hollow bottom brackets… like this one https://off.road.cc/how-many-spacers-install-bottom-bracket-68-73-shimano-hollowtech-sram-gxp