I am assuming he means the XB12X...not the actual years.
unfortunately I do not have an XB anymore, and am not the most familiar with the 08-10 years.. if you were asking about an 1125 I would be more helpful.
I'm trying to figure out whether or not to hold out for a 2010 or if the 08 and 09 is close enough. if the changes are updateable then an older would be fine. So an ecm flash is updatable.
1. Do the new rear wheel bearings last longer than the old ones?
2. Can you upgrade the 08 and 09 to the 3 bearings?
2008 XBs got the redesigned oil pump/cover ( non round ) cover 2009 XBS and XBR got blacked out engine/fork/ frame and 8 piston calipers. 2010 got a O2 sensor on the top header , led taillamp , and arrow shaped turnsignals.
I believe the only differences were the redesigned oil pump/cover and the addition of the XT model. The 2010 got the comfort kit , arrow shaped turn sigs and additional O2 sensor. That's for the Uly's .