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.
Key Features
- 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 discipline
- Sold as each
- Hand built in Denmark
Specifications
| Bearing I.D. (mm) |
17 |
| Manufacturer Number |
61903 (6903) |
| Bearing O.D. (mm) |
30 |
| Material |
Ceramic |
| Thickness |
7 |
