Shimano GRX RD-RX810 11 speed rear derailleur Switch Lever Unit and Fixing Plate.
The following are an “A” match which indicates that the parts are the same in materials, appearance, finish and size etc.
– Shimano GRX Di2 RD-RX815
– Shimano GRX RD-RX400
Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.