In this schematic the "Bolt(6x30)" is used most often.
The Crankcase Cover is made up of components including this Cover,clutch which is the most expensive.
Parts such as the Crankcase Cover: Plug,engine Oil Filler, O Ring(d:2.4,id:52.6), Bolt(6x65), Cap,clutch Release Adjust are included in the Gsxr1000 2011 (l1) Usa (e03) Crankcase Cover parts fiche.