CeramicSpeed OSPW Pulley Wheel System Campagnolo Derailleurs - Alloy Pulley Carbon Cage BLK (Park #767) Available in a variety of

Available in a variety of sizes and color choices

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CeramicSpeed OSPW Pulley Wheel System Campagnolo Derailleurs - Alloy Pulley Carbon Cage BLK (Park #767) Available in a variety ofCeramicSpeed OSPW Pulley Wheel System for Campagnolo Derailleurs 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 and 19 tooth lower aluminum pulley wheels with Grade 3 Silicon Nitride balls to provide absolute optimization of the rear derailleur Robust cage