Shimano GRX RD-RX820 2x 12 Speed Rear Derailleur bikecorp Longer lasting

Longer lasting

thanks to our Axial Clutch V2™ mechanism with its quick engagement

wider range of chainring options

Because we use the finest ingredients and surfactants

Muc-Off Anti-Fog Treatment uses cutting edge moisture absorption technology with an anti-mist formula to create a transparent

Shimano GRX RD-RX820 2x 12 Speed Rear Derailleur bikecorp Longer lastingEnhanced 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