After hearing about drive shafts... all I ever heard was how they are bullet proof, and things like the rear gear oil doesn't need to be changed as much as the manual says (although I have always followed the manual anyway), and after owning 5 bikes with shafts since 1980, my wing rear gear cratered. (27K miles on my 2010) Last month on my first ride in the NC mountains, something started making a BAD noise. I made it to Union Powersports in Blairsville, Ga.... Thank God! Because they install Trike kits, they had several brand new rear gear assemblies on the shelf, and I was out of there enjoying my vacation in under 2 hours. (ALMOST AN HOUR OF THAT WAS THE SERVICE DEPARTMENT TRYING TO TALK HONDA INTO COVERING THE CHANGE-OUT) Honda gave Union the royal runaround though, and forced them into dissasembling my rear end, figure out what was wrong, order the parts, and effectively taking days to fix it. The main bearing came apart and in order for the repair to be covered by the warranty, they would have to fix my used/damaged one. I know Union didn't come out very good on the deal, and I blame Honda for not caring about the customer and working with their dealership.