I've got 56,000 miles on mine and I figure it will be due for a top end rebuild/904 kit at around 100K. But who knows how long the bottom end will last. Have you ever really stepped back and looked at how big the bottom end is on our bikes? That's a whole lotta Rosie. The cylinders look small compared to it. I think the bottom end is the least of my worries in the future, and I do plan on owning this bike as long as I'm alive. I figure I'll get tired of throwing $550 igniter boxes at it long before I have to do something about the bottom end.
