Abi B-543 Sealed Cartridge Bearing (Cannondale Headshok) -
ABI Standard Design Cartridge Bearings.
- 90% filled with Mobilux NGLI 2 synthetic grease, dual-lip labyrinth seals
- If the bearing you are replacing is not marked with a manufacturer number, measure it and compare to specifications listed
- 39.68mm ID, 50.8mm OD, 7.14mm thickness