NUNSPEET, The Netherlands – Shimano’s Dura-Ace Di2 electronic shifting technology has proven itself in the biggest races in the world over the past four years. Now this technology becomes available for a much wider group of road racers and enthusiasts in the new Shimano Ultegra 6770 series with Di2.
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. Additional benefits include an automatic trimming front derailleur, unmatched precision plus easy installation and adjustment.
Shimano Ultegra 6770 series with Di2 technology consists of Dual Control Levers, electronically operated front and rear derailleurs, a battery and electric cables. For the remaining components, like HOLLOWTECH II crankset, brake calipers, cassette sprockets and chain the standard mechanical components of the Ultegra 6700 can be used.
The electric cables include only two core wires (Dura-Ace Di2 has four) and the connectors are smaller too with a diameter of 5.1mm (-3.7mm compared to Dura-Ace Di2). Easy plug and play system to connect the cables, which will be available in different lengths to accommodate most frame dimensions. For diagnosis and changing the shifting order Di2 can be connected with PC easily.
The SEIS (Shimano Electronic Intelligence System) is based on the Shimano Index System (SIS) that has proved its superior gear changing characteristics over the years. The big difference is that in this case, the shifting action is provided for by electronics instead of mechanics. Ultegra 6770 products will exclusively become available in the new glossy grey color and are not compatible with Dura-Ace Di2. This new Di2 series will be put on the market next September.
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