Shimano Dura-Ace 7970 Di2 Rear Derailleur

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. Programmed automatic motion at the touch of a switch makes this derailleur quick smooth and effortless to shift.

Full carbon fibre inner and outer pulley plates enhance rigidity and reduce weight.

Uses a Titanium B-axle bolt for further weight savings.

11-27T wide gear ratio capacity will cater for compact setups as well as the traditional road double

High tolerance cold forged aluminum link plates and body construction is extremely light and durable.

Pulley wheels are made of tough DuPont Zytel for longer life and less chain noise.

Four self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting

10-speed Dura-Ace Di2 compatible

Weight is 225 grams.