Shimano GRX RD-RX820 12-Speed Rear Derailleur Brand_Park Tool Robust multi-discipline alloy seatpost

Robust multi-discipline alloy seatpost

Trail-Tuned Geometry

The uninterrupted shifting experience of the ULTEGRA R8100 12-speed cassette range lets you climb

a single data page can show seven data items

When Strava is authenticated in the ELEMNT Companion App

Shimano GRX RD-RX820 12-Speed Rear Derailleur Brand_Park Tool Robust multi-discipline alloy seatpostSHIMANO GRX Rear Derailleur SHIMANO SHADOW RD+ 12 speed RD RX820 NEW Enhanced chain security and quieter, more stable shifting for gravel riding The RD RX820 is compatible with 11 34T and 11 36T 12 speed cassettes, providing a wide gear range so you can spin a comfortable cadence no matter the terrain type. The SHIMANO GRX 12 speed rear derailleur also features an integrated chain stabilizer that delivers quieter shifting and more secure chain