Shimano, GRX ST-RX820/ BR-RX820, Road Hydraulic Disc Brake, Rear, Flat mount, 140 or 160mm (not included)

DISC BRAKE ASSEMBLED SET/J-KIT DIRECT, GRX, ST-RX820(R), BR-RX820(R) FOR 25MM MNT, RESIN (W/FIN), SL INNER 2200/1700MM HOSE (SM-BH90 BLACK), OT-SP41 600/300MM 12spd