The Swingarm assembly is constructed from several parts from which the Arm-comp-swing,black is the most expensive.
Parts such as the Swingarm: Nut,14mm, Adjuster-chain, Cap,swing Arm, Sleeve,swing Arm are included in the En500a2 Vulcan500 1991 Usa California Canada Swingarm parts fiche.
This SWINGARM assembly utilises two Cap,swing Arm(s) - the highest specified component.