Shimano Alfine Di2 SG-S705 11 Speedhub
The Alfine 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.