Bearing 61801 12x21x5mm Ceramic CS02CU700V60000006 CeramicSpeed Hub Spares

All CeramicSpeed bearings are hand-built in Denmark. The super-smooth CeramicSpeed grade 3 silicon nitride balls are matched (within microns) to hardened steel rolling raceways featuring an ultra-smooth polished groove. The balls are held in place by a reinforced polyamide cage. Each bearing is optimized with a low-viscosity CeramicSpeed Blue Grease to minimize friction and increase bearing life. Non-contact seals complete the bearings, keeping out dirt and moisture. CeramicSpeed bearings can be used for any cycling discipline: Road, Time Trial, Triathlon, Track, Cyclocross, and MTB. The benefits are super-reduced friction, better power transfer, and increased bearing life. During the build process, we check each bearing four times by hand to ensure all parts are perfectly matched.

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