Shimano GRX RD-RX812 Rear Derailleur - 11-Speed Long Cage BLK With Clutch For 1x 42t Low Sprocket Max MFPN=11.4318.003.520 Defined Color Black ISO Diameter

Defined Color Black ISO Diameter 622 / Road / 29" ISO Width (mm) 60 Labeled Size 29 x 2

5 Color Red Weight 53

(mm) 24 Manufacturer Number 61901 (6901) Material Ceramic Thickness 6

} Chamfered leading and side edges for improved cornering clearance

Shimano GRX RD-RX812 Rear Derailleur - 11-Speed Long Cage BLK With Clutch For 1x 42t Low Sprocket Max MFPN=11.4318.003.520 Defined Color Black ISO DiameterShimano 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