Can I replace the QR1 Base-Side on my CSL Elite wheel base with a QR2 Base-Side?
No, it is not possible to install a QR2 Base-Side on CSL Elite wheel bases (CSL Elite Wheel Base, CSL Elite Wheel Base+, and CSL Elite Wheel Base V1.1).
These wheel bases were designed before the QR2 system was introduced.
As a result, compatibility with QR2 was not included in the original design, and a conversion is therefore not supported.