On a serious note, my X is coming up for 10000 miles - no problems to report. BUT: I have a VERY heavy right wrist, & tend to ride flat out at all times. I worry that the poor little 250 can only take so much thrashing at 10000 RPM. I don't race, but am concerned. Maybe someone with more tech knowledge than me can put my mind at rest
X = totally stock mechanically, stored outside under good rain cover. Ridden all year, but I avoid rain, although she does get mucky from road crud/salt etc.