This 13-tooth lower and 19-tooth upper OSPW System has been platform proven at races like Paris Roubaix, 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 four spring tension settings allow customized setup based on ride conditions, and the handbuilt OSPW System offers custom molded carbon fiber cage for lightweight and durability.
CeramicSpeed OSPW Systems reduces friction 35-40% over stock pulley configuration.
In the box:
Complete OSPW System for Ultegra RX800/805
CeramicSpeed Pulley Oil