CeramicSpeed OSPW X Pulley Wheel System Shimano GRX RX820 2x12 - Aluminum Pulley Carbon Cage BLK Model-Harbor Dishing Gauge Features a 15 LED circular

Features a 15 LED circular array that emits 30 lumens of light in all directions

4 mm to 35

Brake Lever Actuation HydraulicBrake Caliper Type Post MountRotor Included NoBrake Lever Use Left or RightColor Diffusion BlackHydraulic Fluid Type Mineral OilPad Compound OrganicHydraulic Hose Length 950Adjustable Reach YesAdjustable Contact Point Nokeyword search Stealth

5-Pawl Solix freehub body with 605 points of engagement

Carbon fiber arms with structural foam core provide excellent strength-to-weight

CeramicSpeed OSPW X Pulley Wheel System Shimano GRX RX820 2x12 - Aluminum Pulley Carbon Cage BLK Model-Harbor Dishing Gauge Features a 15 LED circularThis OSPW X system for Shimano GRX RX820 2x12 speed rear derailleurs 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. Largest Cog 36