CeramicSpeed OSPW Pulley Wheel System Shimano 9000/6800 Series - Alloy Pulley Carbon Cage BLK

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