On this parts fiche the Damper,balancer Gear is the most specified component.
eleven components are shown in this Gsx1300bk Bking 2008 (k8) Usa (e03) Crank Balancer exploded diagram.
A sample from the products for the Crank Balancer include: Bolt(6x20), Bolt, Shaft,crank Balancer, Gear,crank Balancer.
