It occurred to me I haven't heard of someone needing to rebuild an engine in years. Years ago yes but not today. I'm on bike # 8 & never wore out an engine. I've heard of several engines going over 100K miles with no problems. Maybe better oil, maybe better engines. A rider on Youtube put 186,000 miles on his Honda NC700X & it's still running like new. I'll quit wondering how long my bike's going to last. I'm 64 & I won't be around long enough to put 186,000 miles on my Honda NC700X.