Di2 trickles down to Ultegra

Mark Sutton
Di2 trickles down to Ultegra

As predicted back in January, Shimano has passed its until now Dura Ace exclusive Di2 technology on to the Ultegra groupset.

What's more, the electronic shifting will become more affordable, with some predicting the kit will come in at around half the price of its big brother when it hits retail in September.

The manufacturer reveals that there is a slight difference in the wiring of the Dura Ace and new Ultegra system, thus the two won't be compatible. The press release issued this morning reads: "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."

Shimano Ultegra 6770 series with Di2 technology consists of Dual Control Levers, electronically operated front and rear derailleurs, a battery and electric cables.

Product specs can be found below:

ST-6770 Dual Control Levers (10-speed, for double crank sets)
Effortless electronic push button shifting
Intuitive operation, similar to mechanical ULTEGRA
Reach adjust mechanism – fits all hand sizes
Weight: 313g/pair

RD-6770 Rear Derailleur (10-speed)
Fast, precise and smooth electronic shifting – even under load
Easy electronic adjustment system
Crash saver function
Wide gear ratio – Compatible with 11-28T cassette sprockets
Weight: 270g

FD-6770 Front Derailleur (10-speed, for double cranksets)
Fast, precise and smooth electronic shifting – even under load
Automatic trim function
Weight: 162g

SM-BTR1 Battery
High performance lithium ion battery (7.4V)
Easy to assemble/remove for charging
Charging time: maximum 90 minutes
Weight: 71g

SM-EW67-A-E Electric Cable Junction
Battery charge indicator
Rear derailleur adjustment mode

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