Just my 2 cents : saw a lot of bikes in Kunming (125 & 250) last week, same in Chengdu.
I don't know if this no-go-moto-cities list is updated or as ChinaV said only in the process of being implemented.

The best spotting was 2 big street bikes zooming by on a street in Kunming, didn't spot the brand of the 1st, but the 2nd one looked like a BMW roadster to me. Impressive to say the least, and definitely more than 500cc bikes.