Man you guys have to put up with a lot.Yep - If you buy a new bike that has Calif Emissions (Calif still requires a different set up than the other 49 - and of course all bike sold new in Ca. have Ca. Emiss.) no problem of course. BUT - if you buy a used machine without Calif Emiss. (and no out of state bike would have Ca. Emiss) then in order for it to be classifies as a 'used' vehicle it has to have 7,500 miles on it, then no problem with registration. If it doesn't you're screwed, there ain't no way around it. Unless of course you do to the expense of adding the Calif Emission System (at least a charcoal cannister and a couple of other goodies).