The lowest price component in this Footrests parts-list fiche is the Circlip-type-e,10mm.
A sample from the products for the Footrests include: Pin,6x34, Step,fr,lh, Step,rr,rh, Circlip-type-e,10mm.
In this schematic the "Circlip-type-e,10mm" is used most often.