CeramicSpeed 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.
- TECH SPECS
Bearing I.D. (mm) | 18 |
Bearing O.D. (mm) | 30 |
Manufacturer Number | 61903/18 |
Material | Ceramic |
Thickness | 7 |
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