The seven Z50jp Monkey Baja Japan Rear Cushion component parts are all listed in this schematic.
The most expensive part in this assembly is the Cushion Assy*nh1*.
Parts such as the Rear Cushion: Washer,10mm, Cushion Assy*nh1*, Washer,plain,10mm, Nut, Flang, 10mm are included in the Z50jp Monkey Baja Japan Rear Cushion parts fiche.