Shimano GRX RD-RX820 2x 12 Speed Rear Derailleur BX PSI By combining trickle down technology

By combining trickle down technology with a greater accessibility

Pack up your gear

The well-known USB cup-and-cone bearing system guarantees smoothness in the ceramic bearings

Vents -13 vents

Available with 170mm crankarm and 32T chainring

Shimano GRX RD-RX820 2x 12 Speed Rear Derailleur BX PSI By combining trickle down technologyEnhanced chain security and quieter, more stable shifting for gravel ridingThe 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 management during rough rides. And the chain tensioner has an ON OFF switch