The most reasonably priced component used on the Cr125r 2002 (2) European Direct Sales Rear Cushion is the O-ring,21.5x1.5.
In this schematic the "Collar,link Side" is used most often.
Parts such as the Rear Cushion: Bolt,cush Lower 1, Bolt,link,12x81.5, Collar B,cushion, Washer,spring,sea are included in the Cr125r 2002 (2) European Direct Sales Rear Cushion parts fiche.