CeramicSpeed 61903 Standard Bearing - (6903)

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 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