Shimano Dura Ace DI 2 Electronic Shifting Group - Brand

The full groupset includes:1. DI2 STI 10 SPEED SHIFTERS2. DI2 FRONT DERAILLEUR- The "brains" of the system3. DI2 REAR DERAILLEUR4. CRANK 53 X 39 (Who needs a compact anyway ? ) 172.5 MM LENGTH.5. Bottom Bracket (7900 , BSA thread only)6. 7901 10 SPEED Chain7. 11 x 25 10 Speed Cassette8. Front/Rear Brakes- Pair9. Battery (SM-BTR1-A) Li-Ion battery10. Charger Unit (SM-BCR1) and power cord.11. STI Cable- external ; spec m - 830 mm