To jack Maico's thread, I am trying to ID an engine so I can get the correct flywheel weight. The bike is a 1994 but Im sure the engine has been changed, the ID reads KX500BE018047 The "8" I am only guessing at, as the case has a small gouge in that spot, it could be a "6" or even a "0". I have used the search function as well as called my local dealers with no positive results. Any help would be greatly appreciated.