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So I'm gonna be getting ready to do a rebuild on the 125 motor in the off season. Obviously a top end, which I have parts for already (minus gaskets). I am wondering about the crankshaft. It is tough because I don't really know how many miles are on it since I just bought it. I will just replace it this winter just in case. Not entirely sure how much it will set me back in parts, but I think a crank is about $275.. If I expect $750-1000, I should be safe I guess. Paul, what have you found to be the case?