Parts such as the Front Fork: Front Fork Assy, Bolt-steering Stem Hd, Guide-fork Spring, Spring,fork Inner are included in the Kx400 1975 Usa Front Fork parts fiche.
On this parts fiche the Washer-spring,8mm is the most specified component.
The sub assemblies and components that make up this Front Fork include this Front Fork Assy, the most expensive part.