Be careful of the first of the watercooled models KX80 Ken,they have the waterpump shaft integral with the end of the crank,Stuffed waterpump shaft = stuffed crank,I think to fix requires building up the shaft & having it rechromed,or getting a new crank,big $,not sure what year they went to a seperate shaft,I like the air cooled uni-trak rear guard/numberplate job myself,way cool