Shimano Rd-9070 Dura-ace Di2 Rear Derailleur 11-speed Ss

Precise, lightning-fast switching operations on the entire spectrum of a 11-speed cassette - and this in every situation and literally at the touch of a button: the RD-9070 rear derailleur is more compact and lighter than its predecessor and has the E-tube connectors for an extremely simple installation. For the hopefully not occurring crash or other affecting forces, the RD-9070 is like the RD-7970 equipped with a crash mechanism, which disconnects the motor to avoid damage.

Note: In order to ensure proper functioning of the electronic Di2 drive system, all components require the same firmware version. The optional diagnostic device allows for reading out or updating the firmware version. An operation of components with different firmware versions may cause a malfunction or loss of function.