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Description
Here is the RRD valve rocker arm(s) for 139FMB-B engine on motorcycle 50 4t MASH FIFTY, A RC HIVE ...
If your timing chain has broken or you are out of stock, then it will be necessary to change the rocker arm, which acts as a buffer between the piston and the valves if the breakage occurs.
Mounts on:
ENGINE 139FMB-B E4
MASH FIFTY E4
A RC HIVE 50CC E4 ...