Ceramic Speed

Shimano 9100/9150 Oversized Pulley Wheel System: Coated, Alloy Pulley, Carbon Cage, Black

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. 

• Features a 13-tooth upper pulley wheel and a 19-tooth lower pulley wheel to provide absolute optimization of the rear derailleur
• Robust cage crafted from polyamide and carbon fiber for durability and light weight
• Coated bearing races increase bearing service life by increasing hardness of race and reducing corrosion
• Only compatible with Dura Ace 9100/9150 and Ultegra 8000-SS/8050-SS
• Not compatible with Ultegra 8000-GS (long cage) nor with the clutch equipped Ultegra RD RX800/RX805
• CeramicSpeed products with coated bearings include a 6-year warranty