On this parts fiche the Screw Tceif M6x16 is the most specified component.
This schematic depicts all components used in the Sbk959 2018 Usa (superbike 959 Panigale Corse) D220-00018 025 - Freno Posteriore partslist.
The lowest price component in this 025 - Freno Posteriore parts-list fiche is the Clamp.