Shimano Ultegra Di2 R8150 R8170 Disc 12 Speed Electronic Group Set

Ultegra Di2 electronic shifting system. Shift & brake levers: Di2 ST-R8170 2x12 speed left and right. Front derailleur: Di2 FD-R8150 2x12S brazed-on type. Rear derailleur: Di2 RD-R8150 12S. Crankset, bottom bracket and disc rotors are not included.