The inner clutch hub is toast. I'm needing to order a new one and no where online are the OEM inner hubs even available. I cant even find an aftermarket replacement. The question I have is that I can order an OEM hub for a 2007-2012. The part # on the 06 is 703202000 and for 07-12 it is 4703200200. However, on the description of the part, both 06 and 07-12 say "inner clutch hub 85 SX 2003" meaning I assume that it will fit all the way back to 2003. Is there a reason for the difference in part number? Different material I'm assuming? Ultimately, will the 07-12 inner hub fit on the 06? Thanks for any help.