Transmission and Selection - 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 gearbox and selection. click on "details" or on the image of the spare part to access a detailed product sheet.

All the spare parts of the gearbox and selection are available from our website: gearbox, kicker, kicker shaft, neutral position sensor, selection shaft stop, selection shaft seal, drive shaft, selector retainer plate, selector return spring, gearbox barrel.

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