Detailed Ultegra 8170 Di2 2x12 Groupset Components:

• Shimano Ultegra Crankset - 170 50/34 (FC-R8100) 
• Shimano Ultegra Di2 Rear Derailleur (RD-R8150)
• Shimano Ultegra Di2 Front Derailleur (FD-R8150)
• Pair Shimano Ultegra Di2 (ST-R8170) Hydraulic Shift/Brake Levers, right & left, pair Shimano Ultegra Hydraulic Disc Brake Calipers with Pre-bled Hoses
• Shimano EW-EC300 Charging Cable
• Shimano Di2 Internal Battery (BT-DN300)
• Shimano Ultegra Cassette (CS-R8100 11-34)
• 2 Shimano Di2 Charging Cables (EW-EC300) 1x900mm, 1x1200mm
• Shimano XT Quick-Link Chain (CN-M8100) 
• RT-MT800 160mm and Rear, 140mm