Parts such as the Rear Wheel (gn125v/w/x): O Ring(d:2.5,id:13.8), Bolt(8x50), Bearing, Retainer,rr Sprocket Drum are included in the Gn125 1999 (x) (e02 E04 E18 E21 E22 E71) / P9 Rear Wheel (gn125v/w/x) parts fiche.
Of all the components used in this assembly the Hub,rr Wheel is the most expensive.