I am in the process of fitting some uprated wr450 forks to my xt660r. I need to source some head stock bearings. Does anyone know the outside diametre of both the top and bottom head stock bearings on the xt660r. I am too lazy to strip down to measure. If someone has this info it will make my life easy. Or the No.off the bearings or the oficial yam part No. My local Yam dealer are lessthan helpfull. They dont have any and wont get any without payment first and all i want to do is measure them. Thanks