You can find all the replacement parts you need for your Cannondale bike at Escapa.
The Cannondale Scalpel Si 2021 K91001 Shock Mount Bolt is an original Cannondale replacement part used to secure the shock to the frame.
The Cannondale Scalpel Si 2021 K91001 Shock Mount Bolt is an original Cannondale replacement part designed to secure the shock from the top, where it screws into the frame of the Scalpel Si 2021.