RRD freewheel sprocket for motor 139FMB-B motorcycle 50 MASH FIFTY, A RC HIVE E4 ...

Here is the RRD freewheel sprocket for motor 139FMB-B motorcycle 50 MASH FIFTY, A RC HIVE E4 ...

Without this freewheel, the starter turns in a vacuum without driving the motor! Be careful, there could be deposits from your old part, remember to clean it well if this is the case before reinstalling the new part.

Mounts on:

ENGINE 139FMB-B E4

MASH FIFTY E4

A RC HIVE 50CC E4