Regarding the missing vin # on the 01 YZ426. I am anew owner of a YZ426 and also a friend of SSculz. We went together to look at the bike and so I saw that the vin# is in fact missing because it had been very carefully ground and then sanded smooth. It was then very carefully painted to match. We have notified the Cops but they seem somewhat reluctant to get to excited about doing anything. I have yet to here back from the Detective. Anyway, I would love to see the knuckle head get his just dues and get busted. On the lighter side, I have had my thumper for only 4 days and rode it once in the dirt. What a machine, I have not rode dirt for over 10 years, I forgot what I was missing. This old man does not know if I still have the nerve, but dang, is this a great bike to ride. This site has been invaluable in preparing me for the Beast! And thanks to all the tips posted from everone, keep them comming. Until my next Thumping adventure, farewell to all. States.