CYCLAMI Shifter Carbon Fiber Road Bike Ceramic Rear Derailleur Large Pulley, For Shimano 8000 / 8020 / 8050 / 8070 / 8170 / 9100 / 9150 / 9170, For Shimano R7000, For Shimano 5800 / 5700, For Shimano 6800 / 6870 / 9000 / 9070

1. Constructed from high-strength, lightweight carbon fiber material
2. CNC machined interface
3. 7075 aluminum alloy with anodized finish for durability and fade-resistant color
4. Smooth rotation with low-friction transmission for effortless riding
5. Ceramic bearings deliver superior lubrication and extended longevity
6. Deep-cut teeth design ensures tight chain engagement, reducing wear and preventing chain drop for high rotational efficiency
7. Materials: carbon fiber sandwich construction, ceramic bottom bracket
8. Gear tooth count: 13T-18T
9. Compatible with 8-11 speed systems
10. Size: about 14.2 x 8.8 x 1.4cm