11 front and 41 back.
I found my 250 pro was better with 10 front and a 43 back,
But it all depends on how you ride, what type of terain you ride and how you want the bike to repond.
I've got 125 gearing on my 200 which is 9 front 48 back. seems to be ok for me at the moment but i will
drop down to 10/44 when the summer months come and theres not so much mud about.