Ok, I've been doing some research on these bikes because I'm looking at a new bike for the geeerage. One thing seems to be a little odd. I like the fact that the YZ450 is considerably lighter and I don't mind not having e-start but.........reliability is a big issue for me. That is where I'm confused. Most everyone says that the YZ450 and WR450 have the same motor except that the WR450 is clogged up with a some power robbing emissions stuff. If that is the case, is the YZ as reliable as the WR? The reason that I ask is because I've also seen a few threads in which people are looking for the most reliable 450 bike out there. There are always lots of recommendations for the WR450 but I don't think I've really ever seen any recommendations for the YZ. What gives? Is one typically more reliable than the other? That would suggest to me that the engines are different. But that is not what most threads say, they almost all say that the engine is essentially the same.