Shimano GRX RD-RX820 Przerzutka tylna GS 12-biegowy

Better chain protection and quieter, more stable shifting in gravel use.

The RD-RX820 is compatible with 11-34T and 11-36T 12-speed cassettes, providing a wide range of ratios for comfortable cadence on any terrain. The SHIMANO GRX 12-speed rear derailleur also features an integrated chain stabiliser for quieter shifting and safer chain management when the going gets rough. The chain tensioner has an ON/OFF switch for rides on slippery surfaces.