How many miles will my Kawasaki Ninja 500R last?

I put sythetic oil in at 3k miles, and do not race it around. I typically go the speed limit, and don't attempt wheelies.I perform other basic maintenance as needed, and would like to know at what mileage certain things start to go wrong (of course it varies between makes and how well a rider treats his motorcycle)I am basically asking how long the engine will last. As far as I know, the only'preventative maintence'for an engine is changing oil/filter simultaneously. (and not stunting around) 30K? 90K? Have you ever had an engine failure?

You should get alot of miles out of it then. Some last a very long time, with care.

well.........you basically answered your own question. It all depends on how well you want to take care of it>

It should last as long as you want it to last. As long as you do the proper maitenance and fix any problems as soon as they arise the bike should last for many years.