I'm in the process of gearing up to replace the swing arm bearings. and thinking that while off the bike it would be a good idea to slip off the drive shaft and have a look see. my personal view of such ventures is that even if no problems are found,at a bare minimum, all rubber parts should be replaced. my question is what other parts should be replaced as a matter of reasonable caution? my '98 1100 bike has 80Kmiles and I doubt if the D.S. has ever been out of the bike.