CeramicSpeed 61903/18 Standard Bearing Chain Wrap Capacity (teeth)-37 The low-profile design reduces weight

The low-profile design reduces weight minimizes snag points and provides a clean sleek look

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CeramicSpeed 61903/18 Standard Bearing Chain Wrap Capacity (teeth)-37 The low-profile design reduces weightCeramicSpeed 61903 18 Standard Bearing. CeramicSpeed cartridge bearings are an upgrade option for any cycling discipline. These bearings provide extremely low friction improved power transfer and a service life that far exceeds traditional steel bearings. Grade 3 Silicon Nitride balls Hardened steel races Reinforced polymide cage and non contact seal to keep dirt and moisture out High resistance to poor lubrication Can be used for any cycling