Some call this OverSize, C-Bear simply calls it Original Cage Max, C-Bear Ceramic OCM.
C-Bear Ceramic Aluminum Shift Wheels with full ceramic bearings for Shimano 10/11-speed rear derailleurs. Shifters are the fastest rotating bearings on your bike. Upgrading to ceramic bearings is therefore the most effective upgrade.
Suitable for the following rear derailleurs:
- Dura Ace R9100, R9150 Di2
- Ultegra R8000, R8050 Di2
- GRX
- XTR M9000
- XT M8000
- SLX M7000
- 105 R7000
C-Bear Ceramic Bearings is a Belgian bearing specialist for ceramic ball bearings with best smooth running properties, durability and fitting accuracy. All bearings work without additional spacers and washers.
: Not compatible with the Shimano DURA-ACE FC-R9200 rear derailleur.
Included in delivery:
2x C-Bear Ceramic derailleur wheels






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