Shimano GRX RD-RX812 Rear Derailleur - 11-Speed Long Cage BLK With Clutch For 1x 42t Low Sprocket Max MFPN=11.4318.003.520 } Chamfered leading and side

} Chamfered leading and side edges for improved cornering clearance

5 Color Red Weight 53

Threading 10 x 1 Length 137

Performance is consistent in both wet and dry conditions

Shimano GRX RD-RX812 Rear Derailleur - 11-Speed Long Cage BLK With Clutch For 1x 42t Low Sprocket Max MFPN=11.4318.003.520 } Chamfered leading and sideShimano GRX RD RX812 Rear Derailleur 11 Speed Long Cage Black With Clutch For 1x 42t Low Sprocket Max. The Shimano GRX 11 speed rear derailleur has an integrated chain stabilizer mechanism that provides a quieter experience shifting security and precision on mixed terrain. For rides on smooth surfaces the derailleur features an ON OFF switch for the chain tensioner. The Shimano Shadow RD+ adjustable chain stabilizer provides silent and uninterrupted