Crank-set: FC-R8100 with a choice of rings and crank lengths.
Cassette: CS-R8100-12 12 speed 11-30 or 11-34
Chain: CN-M8100 12 speed
Front Derailleur: FD-R8150 Di2
Rear Derailleur: RD-R8150 Di2
Disc Brakes/Gear Levers: ST-R8170 Hydraulic disc brakes with Di2 shifting.
Di2 Parts: Battery, Charging cable and two Di2 cables (1200mm and 850mm).
Not all combination of parts that you may want may be available because of distributor/manufacturer delays. This means cassette size, crank-set length and chain-ring size. But we definitely have more groups than most shops in our area! However, we receive items everyday, therefore, we would request you call the store and inquire.