The Zx750k1 Zxr750r 1991 Europe Uk Fr Ar Fg It Nr Sp Gear Change Mechanism consists of eighteen pieces with the Lever-comp-change Sha being the most expensive.
The component with the lowest price in the GEAR CHANGE MECHANISM schematic is the Nut,6m/m.
On this parts fiche the Spring-chang Lever is the most specified component.