Digital Integrated Intelligence or Di2: with programmed automatic motion at the touch of a switch the Dura-Ace Di2 rear derailleur is quick, smooth and effortless, making for unmatched drivetrain efficiency.
- Di2 Shifting makes changing gear easier and faster than ever before
- The integrated CPU keeps track of the front and rear derailleurs to keep the driveline running as efficient as possible.
- Less risk of the chain dropping
- 11-27T wide gear ratio capacity will cater for compact set-ups as well as the traditional road double
- Full carbon fibre inner and outer pulley plates enhance rigidity
- Titanium B axle bolt for further weight savings .
- High tolerance cold forged aluminium linkl lates
- Pulleys are made of tough DuPont Zytel for longer life and less chain noise.
- 10-speed Dura-Ace Di2 compatible.
- Weight is 225 grams.