Shimano RD-7970 Dura-Ace Di2 10-speed Rear Derailleur SS

Product Description

Digital Integrated Intelligence or Di 2: with programmed automatic motion at the touch of a switch the Dura-Ace Di 2 rear derailleur is quick smooth & effortless making for unmatched drivetrain efficiency Programmed automatic motion at the touch of a switch makes this derailleur quick smooth & effortless to shift The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates corrosion & stretching but provides effortless gear shifts Derailleur contains a saver &40;fuse&41; function where the inner structure is protected from strong impacts 11-27T wide gear ratio capacity will cater for compact setups as well as the traditional road double Full carbon fibre inner & outer pulley plates enhance rigidity & reduce weight Titanium B axle bolt for further weight savings High tolerance cold forged aluminium link plates & body construction is extremely light & durable Four self-lubricating micro-machined fluorine-coated link pivot bushings provide low-friction shifting Pulleys are made from tough Du Pont Zytel for longer life & less chain noise 10-speed Dura-Ace Di 2 compatible Weight is 225 grams