Shimano DI2 DRIVETRAIN UPGRADE KIT XTREach kit includes one each of the following: RD M9250, SW M9250, BT DN320, EC DN100 and SM CN910 12 PLEASE NOTE: CS M9200 is compatible with the MICRO SPLINE FREEHUB body standard. 9 45T is compatible with MICRO SPLINE FREEHUB standards and mounts with the use of a special lockring tool (TL LR021).
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