One used Kawasaki rod kit, appears to be for the models listed. Model identification is based upon the part number labels on the box which I received with the used parts.

All parts are worn beyond service specifications, and useful only as decoration or possibly reference. Excessive wear is visible in photos.

1980-1981 KX420 

1979-1980 KDX400 

1981 KDX420 

1982 KDX450