CeramicSpeed OSPW System for Shimano 9000/6800 10/11-Speed

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. 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 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 CeramicSpeed Oversized Pulley Wheel System for Shimano 9000/6700 Series – Alloy Pulley, Carbon Cage, Black keyword search: OSPWS Largest Cog: 28 Fits Brand: Shimano Fits Model: Ultegra 6700/6770/6800/6870 , Dura Ace 7900/7970/9000/9070 Drivetrain Speeds: 11 , 10 Defined Color: Black