On this parts fiche the Bearing(22x29x30) is the most specified component.
twenty-six components are listed in the schematic for this Gsx600f Katana 2004 (k4) Usa (e03) Rear Swinging Arm .
Parts such as the Rear Swinging Arm: Swingingarm Assy,rr, Buffer,chain Touch Defense, Bearing(20x27x23.5), Spacer,rr Swgarm Pivot are included in the Gsx600f Katana 2004 (k4) Usa (e03) Rear Swinging Arm parts fiche.