Shimano GRX RD-RX820 12-Speed Rear Derailleur Category_Hubs design and technology are combined

design and technology are combined in the Rizer to improve comfort and efficiency so you can achieve the most immersive workout environment with your bike

Match your style

Easy change from Presta to Schrader or Dunlop via a simple switch

The design and edgy graphics perfectly compliment current gen bicycles

Flip it over and run it the other for 10mm drop

Shimano GRX RD-RX820 12-Speed Rear Derailleur Category_Hubs design and technology are combinedSHIMANO 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