Parts such as the Rear Cushion Lever: Bearing(17x24x20), Lever Set,rr Cushion, Bolt(10x52), Bolt,rr Cushion Lever Ctr are included in the Vz800 Boulevard M50 2006 (k6) Usa California (e03 E33) Rear Cushion Lever parts fiche.
On this parts fiche the Bearing(17x24x20) is the most specified component.