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Product description
The CeramicSpeed Oversized Pulley Wheel System provides optimization and increased efficiency of the rear derailleur through its extremely low-friction bearings and unique overall design.
- Hardened steel bearing races
- Only compatible with Ultegra 6700/6770/6800/6870 mechanical and Di2 rear derailleurs and Dura Ace 7900/7970/9000/9070 mechanical and Di2 rear derailleurs (up to 28t cassettes)
- Not compatible with Shimano Dura-Ace 9100/9150 and Ultegra 8000 series rear derailleurs
- Features two oversized 17-tooth aluminum pulley wheels with Grade 3 Silicon Nitride balls
- Robust cage crafted from polyamide and carbon fiber for durability and light weight
Geometry
Specifications
