OSPW X Pulley Wheel System for Shimano GRX RX820 2x12-Speed auto rack 62-66 degree chainstay angle

62-66 degree chainstay angle

The Crosshair Caliper Alignment System dramatically simplifies caliper installment and alignment

making it a very comfortable option for those looking to minimize bulk

and faster ride

OSPW X Pulley Wheel System for Shimano GRX RX820 2x12-Speed auto rack 62-66 degree chainstay angleThis 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. Robust cage