OSPW X for Shimano GRX810/815 + RX800/805 

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 four spring tension settings allow customised 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. 

Only compatible with the ‘2X-specific’ GRX 810, GRX 815, as well as the RX800, and RX805 derailleurs. 

You may setup the derailleur as a 1X or 2X used with up-to a 36-tooth cassette.

Tech Data

Pulley Wheels: CeramicSpeed 13-tooth upper and 19-tooth lower

Pulley Wheel Material: Aluminium

Cage Material: Carbon reinforced PA

Bearing Options: CeramicSpeed Standard or Coated

CeramicSpeed Grease/Oil: CeramicSpeed Oil for Pulley Wheel Bearings

Compatibility: Shimano GRX 810 & GRX 815, Shimano Ultegra RX 800 & Ultegra RX 805 

Casette Compatibility: Up to a 11-36 range

Spring Tension Settings: 4 spring tension settings

Speed: 11-speed

Discipline: Gravel/Cross