is it possible to put a 330 kit on a 250ex? If it is that would be 1 bad machine.

 

won't work the motors are totally different.

I can't think of one company that makes recon big bores, i doubt a 250EX will ever have one.

Whats the point?! an auto clutch 330cc bike. It wouldn't hang with a 330EX on its best day. A shaft drive probably wouldn't handle the power. its just impossible..