Shimano GRX RD-RX810 11-speed Rear Derailleur Color:Black LED runtime display

LED runtime display

8 Stem Giant Sport

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Shimano GRX RD-RX810 11-speed Rear Derailleur Color:Black LED runtime displayDescription SHIMANO GRX Rear Derailleur RD RX810 SHIMANO SHADOW RD+ 34T max low sprocket 11 speed Based on the technology introduced by SHIMANO with the RX rear derailleurs, the GRX RD RX810 2x11 speed rear derailleur is characterised by quiet, smooth, precise and reliable shifting, even in the most demanding terrain, thanks mainly to the SHADOW RD+ chain stabilisation system. It prevents the chain from hitting and unnecessary movements of the rear