Can i put some motorcycle parts on motor scooter?
Motorcycle parts on scooter? If your YiYing is a Honda clone engine you might be able to fit larger motorcycle cylinder and piston on the case -like a 70cc set. Carberator maybe- 14 mm change to a 18mm perhaps. Minerelli engines on small 50cc bikes and mopeds/scooters had same base engine as the 80cc, the dirt bike cylinder kits would fit on some- not all mopeds- with that base 50 engine and a few were clocked at 65mph- impound usually followed for the moped plated vehicles. The old Puchs had a 70cc bore kit available for motorcycles that was occasionally put on mopeds, Indian made Hero copy uses 70ccc also. Your scooter could get hopped up a little with minimal problems, full race hot rodding will result in much shorter engine life.
