jetting carb for 6-10,000 ft.

[amoehr1]

I just got a 06 250ex and was wondering what jets i need for riding @ 10,000 ft. approx. plus i will add a k&n air filter also.
thanks

[ryanh250ex]

stock bike with K&N? Airbox lid on or off?

If the lid is off, I would leave the jetting stock. If it's on....you would probably have to go down to about a 92 main.

You may have to play with that a little bit...I always rode at less than 500 ft above sea level.