1x Shimano GRX RX827 Di2 Rear Derailleur - 12 Speed - Black / 12 Speed. It includes both brake rotors and the 160 mm rear brake-mount adaptor. All components are new and unused. 1x Shimano GRX RX825 Di2 Front Disc Brake STI & RX820 Flat Mount Caliper - 1x12 Speed - Black / Front / 12 Speed / 1000mm.
