Parts such as the Front Master Cylinder: Screw, Cylinder Assembly,front Master, Holder,master Cylinder, Washer are included in the Gsxr750x 1987 (h) (e01 E02 4 6 15 16 17 18 21 22 24 25 34 39 53) Front Master Cylinder parts fiche.
In this schematic the "Screw" is used most often.
The Screw is the lowest priced item on this Front Master Cylinder schematic.