1975 Kawasaki KX400 for sale. Fully rebuilt engine including rebuilt crank (with KX500 rod and cylinder spacer), 2nd over Wossner piston, new gaskets and seals. New Air filter, rear tire, seat cover, fork seals and dust covers. Put about 15 minutes on it since full rebuild to ensure it runs and shifts properly. Very original bike in race ready condition. Botton cradle of the frame has an old repair/reinforcement that is holding up well. No title.