Exceptional performance with CeramicSpeed bearings

Experience extremely low friction and long lifespan with the CeramicSpeed 61903 ball bearing. This handcrafted bearing is ideal for all cycling disciplines, from road to MTB.

• Silicon Nitride balls: 400% smoother and 58% lighter than steel balls.
• Ultra-smooth polished steel races: Ensure smooth rotation and increased power transfer.
• Sealed design: Protects against dirt and moisture.
• Inner diameter: 17 mm
• Outer diameter: 30 mm
• Width: 7 mm
• Weight: 13.85 g

Choose CeramicSpeed for high performance and quality in every rotation.