The Zx550a2 Gpz550 1985 Europe Uk Fr Fg Gr It Nr Sd St Swingarm consists of twelve pieces with the Arm-comp-swing,g.silv being the most expensive.
The lowest price component in this Swingarm parts-list fiche is the Nut,8mm.
Some items from this specific schematic: Nut,14mm, Cap,swing Arm, Bearing, Guard,chain.