FH-7700 Dura Ace 9 Speed Rear Hub Ceramic Bearing Balls Pack Of 18 Si3N4 Silicon Nitride Solid Ceramic Low Friction Ultra Light Replacement Parts For Dura Ace Hub Dry Lube Compatible No Lubrication

These solid ceramic bearing balls are designed for rear hub assemblies and are commonly used to upgrade or replace worn components in 9-speed hubs that use ceramic balls. They work well with dry-lubed, sealed bearing setups typically found on performance bikes.

✅ Material: Si3N4 ceramic (silicon nitride)
✅ Color: Black
✅ Lubrication: Dry lube (no lubrication)
✅ Quantity: Pack of 18 balls
✅ Application: Fits rear hub 9-speed FH-7700 sealed bearing assemblies

💡 What is a ceramic bearing ball used for in bicycle hubs and why choose Si3N4 high-performance balls?

These ceramic balls are handy upgrades to reduce friction and extend life in sealed hub systems.

- Reduced friction and wear in sealed bearings

- Improved wear resistance in dry-lubed environments

- Smoother rotation at high speeds

- Suitable for upgrading 9-speed rear hubs