Shimano Ultegra 12 Speed Rim Brake Di2 Groupset New Full Options List
1 x RD-R8150 Ultegra Di2 12-speed rear derailleur E-tube. 1 x FD-R8150 Ultegra Di2 12-speed front derailleur E-tube, braze on, double. 1 x ST-R8150 Ultegra Di2 STI for drop bar without E-tube wires, 12-speed pair.