suspension on yz 250


my brother has an 2003 yz 250 and the suspension just plainly sucks, compared to my 03 cr 250, he wt is around 165 and he is continuously bottoming it out. my question is on the rear shock is that nitrogen or air that is in there


It's not air, b/c the pressure of air will change when temperature changes. It's nitrogen. Nitrogen has special characteristics that allow it to remain a constant pressure no matter what the weather is.
- a d v e r t i s e m e n t -


Thinks he can ride
Take it to a shop, they should recharge it for a reasonable price.

I wouldn't increase the nitrogen pressure in an attempt to make the shock stiffer.