Yes, the 2027+ Lyrik E1 can be upgraded to 00.4318.118.000 (Damper Upgrade Kit - Flight Attendant Charger3.2 w/ButterCups (Includes Damper,Module,Battery,USB-C Charger)(necessary power meter/pedal sensor not included) - Lyrik E1+ (2027+)).
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