Crankcase and linkage - 139 FMB-B vertical motor

Click on the yellow circles to see the parts

You will find precisely the exact part for the 139 FMB-B engine of your 49,9cm3 motorcycle on this technical diagram of the crankcase and the crankshaft. Click on "details" or on the image of the spare part to access a detailed product sheet.

All the spare parts of the crankcase and the crankshaft are available in stock on our website: oil pump, oil pump spacer, oil pump gear, studs, crankshaft, crankshaft key, oil strainer, right crankcase, intermediate crankcase, centering ring, drain plug, selection shaft stop, seal pocket.

Find here the plan exploded view of your mecaboite 50cc. 139 FMB-B 50cc engine crankcase and engine crankshaft for 4 time Eurocka motorcycles Legend, Mash Fifty, Masai Black Coffee and Scrambler, Orion Apollo RX50. New mob parts with original quality and adaptable speeds.