Shimano announced that the Dura Ace electronic shifting, Di2 (Digital Integrated Intelligence), that has been used by professional riders for the past four years will be available this fall in their Ultegra line of components. Ultegra components are just one level lower than the Dura Ace level and is much more affordable for the avid cyclist and weekend racer.
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. Control at the top of your fingers. Additional benefits include an automatic trimming front derailleur, unmatched precision plus super 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 – you can rely on the products of the mechanical SHIMANO ULTEGRA 6700 component group.
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. Connection with PC for diagnosis and changing the shifting order.
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 ULTEGRA glossy grey color. The products are not compatible with DURA-ACE Di2.