The Cotter Pin is the lowest priced item on this Front Calipers schematic.
The sub assemblies and components that make up this Front Calipers include this Caliper Assembly,right, the most expensive part.
This schematic depicts all components used in the Gsxr1100 1991 (m) (e01 E02 E04 15 16 17 18 21 22 24 25 34 39 53) Front Calipers partslist.