Replacement bearings for the ZM1 hubs are listed below.
11.2018.060.004 WHEEL HUB BEARING KIT - REAR - (INCLUDES 1-6903/61903 AND 1-63803D28) - ZM1 3ZERO
11.2018.060.003 WHEEL HUB BEARING KIT - FRONT - (INCLUDES 2-23327) - ZM1 3ZERO
ZIPP 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 ZIPP 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.