OSPW X Pulley Wheel System Shimano GRX RX820 2×12 – Aluminum Pulley Carbon Cage BLK

This 13-tooth upper and 19-tooth lower OSPW System has been platform proven at races like Paris Robaix, Strada Bianche and CX World Cups The system is built for gravel and cross disciplines and meets the needs for durability, low friction and longevity The