I haven't owned it all 30k (no way I could have bought this new at $15k), but from what I've gathered its just been the basics. Tires, oil, chains, coolant flush, plugs, fork seals, etc. The valves were checked at 27k and all were within spec and hadn't been touched. The cam chain tensioners are just starting to get loud so i'm looking for options to replace them here in the near future. From everything I've read these Rotax lumps are almost bulletproof. The previous owner replaced the clutch but not because the old one was slipping, he wanted to put softer springs in it and went with a Barnett clutch while at it. I still have the stock clutch and it still looks good.