Found A China Model website.

[XLsior]

I was looking for possible sources for a the Loncin RE250 6speed engine.

I came across the China GR Motor Industry Co,Limited website.
http://www.offroad-dirtbike.com/

There seems to be a plethora of models and specs being distributed by this Chinese establishment.

I thought perhaps some might find this information useful/interesting.

I came across a magician250 with the re250...
http://www.offroad-dirtbike.com/sale-12341515-automatic-dirt-bike-250cc-re250-engine-double-pipe-muffler-12kw-8000rpm.html

Plenty of other models.