Reading the features of the bike on the YAMAHA homepage. The fuel and air are YZ, and so is the frame. Im just saying this thing is built to be more of a YZ than a WR. Even though it is a WR and has the same transmission. Its too narrow to, thats not comfortable, a seriouse off-roader will go for at least 15 hours daily on average, at least I do, and I cant imagine riding with a narrow bike and having only a 2 gallon tank, I have a three and I barely make it home with gas in it. But whatever, i'll stick to my steel frame '04, it is what it is. Im still going to ride it though, and see what happens, but i dont think im going to waste my money on it.