Hey everyone,
I have an 07 CRF-150R that I need some advice as to what to do. I checked my valves about 3-4 months ago and one of the valves was way off. We shimmed that valve up to about the biggest shim possible. (Sorry if this is a little a unclear....I am no mechanic) So, my bike is definitely needing some sort valve job. My friend is trying to talk me into just installing a big bore kit. He thinks it will only cost a few hundred dollars more than just replacing the valves. Anyone have any ideas? Anyone know about how much this would cost? Thanks for all your help.