UHm - Honda USA supports the CR125 - just give them a call.
There are hundreds of thousands of motox'ers in the US, and the CR125 is a very popular bike.
But to help you out I will give you the contact info of Honda of Houston, who have been fielding their own MotoX team for years... if anyone can hep you with parts and repairs for a common garden variety CR125, they can:
http://www.hondaofhouston.com/