With a quantity of two pieces, the Brg,ball, 6303zc3 is the most used part in the REAR HUB diagram.
Parts such as the Rear Hub: Collar,axle,17.2x30x3, Pin-cotter,4.0x35, Spring-brak Shoe, Coupling,rr Hub are included in the Z550g2 Gt550 1984 United Kingdom Fr Fg Rear Hub parts fiche.
Of all the components used in this assembly the Wheel-assy,rr,f.black is the most expensive.