Shimano GRX RD-RX812 11-Speed Rear Derailleur Long Black pickuponly Diamond pattern design looks powerful

Diamond pattern design looks powerful and improves overall grip

5 liters of space

52 degrees yielding exceptional control</li>

all together at once

Using a special design where the maximum number of balls are inserted into the bearing

Shimano GRX RD-RX812 11-Speed Rear Derailleur Long Black pickuponly Diamond pattern design looks powerfulWith an integrated chain stabilizer mechanism, the SHIMANO GRX derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON OFF switch for the chain tensioner. The RD RX812 rear derailleur is compatible with mtb cassettes with a 42T low sprocket max. Silent and uninterrupted rear shifting on rough terrain Adjustable chain stabilizer prevents chain slapping