Cycling · Groupset · Shimano
Shimano Dura-Ace Di2
Shimano's flagship 12-speed semi-wireless electronic road groupset, designed for professional and competitive road cyclists seeking top-tier shifting speed and braking performance.
Released 2021Quick facts · not yet fully researched
Quick specs
- Speeds
- 12-speed (2x12)
- Battery
- 3.7 Wh / 7.4 V central battery; ~1,000 km per charge
- Cassette Range
- 11-30T or 11-34T (Hyperglide+)
- Shifting System
- Semi-wireless Di2: wireless levers (coin cell), derailleurs wired to central seatpost battery
- Rear Shift Speed
- 58% faster than R9100 Di2
- Front Shift Speed
- 45% faster than R9150 front derailleur
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