The Nut is the cheapest item from this partsfiche.
This Rear Cushion Lever diagram displays the required parts for the Gsx1300bka Bking 2008 (k8) Usa (e03) Rear Cushion Lever.
Some items from this specific schematic: Lever Set,rr Cushion, Bolt,rr Cushion Lever Fr, Nut, Nut.