you should check out FCR suspension they will set it to your height and weight for i think like 20 bucks. or you can just get them to do the whole suspension wich is all sorts of new stuff. i had my crf150r done with them and it rides a heck of allot better.(new jetting, springs, oil etc..) they will show up at some major amateur motocross events.

[url]http://www.fcrsuspension.com/