Yes, the damper of the 2023-2026 Lyrik D1-D2 can be upgraded to Charger 3.1 RC2 by installing part number 00.4318.095.001 (Damper Upgrade Kit - Charger3.1 RC2 Crown w/ButterCups (Includes Complete Right Side Internals) - Lyrik D1+ (2023+)).
RockShox service kits and spare parts are best obtained through your local shop or dealer. See our dealer locator, below, to find a dealer near you. If no one is currently listed near you, then please search for local shops via your preferred web browser.
https://www.sram.com/en/dealer-locator
Manuals and additional information about RockShox and SRAM components can be found at our service site, linked below.
https://www.sram.com/en/service
Further questions?
Reach out to Rider Support by Asking A Question at the link below.
https://www.sram.com/en/rockshox/campaigns/rockshox-rider-support