acceleration is crap in stock form
lots of low end grunt
get some aftermarket rear tires, the stock ones are terrible
i'm currently running full exhaust/no airbox/rejetted carb / UNI air filter/no choke on my 250 and it pulls HARD (for a 250 of course) in 1st through 3rd. 4th and 5th it revs out, although it could be better. i'm working on it...
PM me if you need some pointers, i've had my 250 longer than most everyone on this forum, and have one of the more extensively modified 250's as well.
Respect is earned, never given.
2002 250ex- SOLD.
Creator of the 250EX Performance FAQ. For 250ex headwork and various porting , please email me at flyinryanporting@gmail.com