SHIMANO Dura-Ace Di2 12-Speed Disc Brake Triathlon Groupset
The contents of the set is as below:
Shimano Dura Ace ST-R9180/BR-R9270 J-kit including pre-bleed hoses(SM-BH90-JKSSR)
Dura-Ace Di2 FD-R9250 Front Derailleur
Dura-Ace Di2 RD-R9250 rear derailleur
SW-R9160 buttons
Y connection cable EW-JC130 (Please choose)
Shimano SM-JC41 Internal Connection Box
EW-AD305 conversion adapter
Electrical cables EW-SD50 3x350mm, EW-SD300 2x1200 mm and 1x600mm
Battery BT-DN300
EW-EC300 charger cable
Note: Crank, cassete, chain and disc rotors are sold separately