Shimano 105 Di2 12 Speed Disc Brake Groupset Brand New Retail R7170 Full Options
1 x ST-R7170 105 Di2 hydraulic disc STI set, flat mount calliper, left rear. 1 x ST-R7170 105 Di2 hydraulic disc STI set, flat mount calliper, right front. 1 x RD-R7150 105 Di2 12-speed rear derailleur, E-tube.