Shimano Ultegra R8170 Di2 Group Set F/Disc, 175 mm, 52x36t, 11-30. This group set includes:

• IFDR8150F - Shimano Ultegra Front Derailleur (Di2 Spec.) FD-R8150 Double Down Swing solderable color series
• IR8170DRRD SC170F - Shimano Ultegra Brake (Kit) BRR8170KTSTR8170 right/rear resin with wing without adapter, for a rear mounting thickness of 25 mm 1700 (black)
• IFCR8100EX26 - Shimano Ultegra Crankset FC-R8100 12-speed 175.0 mm 52-36t color series
• IBTDN3001 - Shimano Battery (Di2 Spec.) BT-DN300 internal 3.7 Wh
• IR8170DLF6SC100F - Shimano Ultegra Brake (Kit) BRR8170KTSTR8170 left/front resin with wing front mount for 160 mm discs 1000 (black)
• ICSR810012130 - Shimano Ultegra Cassette CS-R8100-12 12-speed 11-12-13-14-15-16-17-19-21-24-27-30t
• IEWEC300A - Shimano Charging Cable EW-EC300
• ICNM8100126Q - Shimano Chain CN-M8100 HG 12-speed e-Bike rated 126 links Quick-Link
• IRDR8150F - Shimano Rear Derailleur 12s Di2 RD-R8150 Ultegra crankset gearing: 52x36T, cassette gearing: 11-30, crank length: 175 mm.