SHIMNAO ALFINE Di2 SG-S505 Internal Gear Hub 8-Speed
 SHIMNAO ALFINE Di2 is a stylish, premium-level component group sure to appeal to quality-minded consumers. Premium quality, style, versatility, and effortless operation define Alfine. The advantages of Di2 (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 Alfine SG-S505 8-speed hub ensures fast and precise shifting. For operation the optional MU-S705 motor unit and the optional CS-S500 sprocket is needed. With Centerlock disc mount. V-brake compatible.

Note: The Alfine Di2 is 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.


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