We advise adhering to the manufacturer's guidelines for the installation of your Cannondale Si Stages Power meter onto your Hollowgram Si or SiSL2 crankset. Kindly refer to the attached Cannondale manual, which provides instructions for installing both the SiSL2 and Si left crank (the procedure is identical for both).

For pre-2020 cranksets, see the attached document. For instructions for 2020 and newer cranks, the left crank features a self-extracting bolt.