Transmission and selection - Mash Fifty 50 4T

Click on the yellow circles to see the parts

You will find precisely the exact part that fits your 50cc box bike. Mash Fifty 50 4T on this technical diagram of the gearbox and selection of the 139 FMB-B engine: click on "details" or on the image of the spare part to access a detailed product sheet.

All spare parts that make up the 50cm3 139 FMB-B engine are available from our website: gearbox, kicker, kicker shaft, neutral position sensor, selection shaft stopper, selection shaft seal , drive shaft, selector retainer plate, selector return spring, gearbox barrel.

Original and adaptable mécaboite parts - Microfiche moto Mash Fifty 50 4T with 139 motor FMB-B - Exploded drawing: Transmission diagram and selection.