02 crf 450. I`v bout this bike new it has , runs great , but it is over heating for some resin. Its not the top end , but the bottom case`s that are getting hotter than normal , it has new crank bearings , so i don`t think that is it , becuse it was getting hot befor that too , last year befor that new bearing were installed. I had the honda shop look at it , they did a presser test on the rad , and it was good , they looked at the clutche , and clutche bearing , and said it was good too ? I don`t no what it is , any thoughs. And yes i did look at the head gasket it was good.