OSPW System for Shimano 9100/8000 11-Speed

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 13-tooth upper and 19-tooth lower, titanium pulley wheels with Grade 3 Silicon Nitride balls
• Titanium pulley wheels are 3D-printed and hollow for additional weight savings and durability
• 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 or 8050-GS (medium cage) nor with the clutch equipped Ultegra RD RX800/RX805
• CeramicSpeed products with coated bearings include a lifetime warranty