The Nexus-A Di2 gear hub in the premium version with 8 gears and for rim brakes.36 holes.
The advantages ofDi2 (Digital Integrated Intelligence) are clear for everybody who has tested it: changing gears becomes easier, effortless and faster by simply touching the shift buttons. A shifter sends an electronic signal to the optional motor unit, which initiates the gear change.
The electronic Nexus SG-C6060 8-speed hub ensures fast and precise shifting. For operation the optional MU-S705 motor unit and the optional CS-S500 sprocket is needed.
Note: The Nexus Di2 is not compatible with the components of Ultegra and Dura Ace Di2.
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.