Hi, I'm new to the forum but have had scooters & interest in them for many years.
The Generic 50 XOR is derestricted by removing the spacer from the variator pulley, this gives the most result, also changing the carb main jet and fitting a sports exhaust helps to gaid a little top speed.
result is 45mph.
I see this is an old subject, I hope someone reads this, probablt too late for Roby