The revolutionary Dura-Ace Di2 electronic shifting option with SEIS (Shimano Electronic Intelligent System) takes the already superior Shimano shifting performance to a whole new level never seen before. The increased accuracy, smoothness and reliability of electronic shifting makes gear changes faster and virtually eliminates missed shifts.

Simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold
Buttons are located in a near identical place to the positions you'd assume for shifting using a mechanical Shimano STI
Shifters are lightweight thanks to carbon fibre lever blades, carbon composite bracket body, and a titanium clamp band / fixing bolt
Brake lever pivot is positioned to increase power providing excellent ergonomics when riding on the hoods
Finely tuneable reach adjusters for the levers enable custom fitment for all hands
The Di2 STIs are also compatible with the FlightDeck computer (SC-7900), measuring important data such as heart rate, altitude, cadence, gear position, battery indicator, and more
Levers are supplied without electrical cables, as these need to be ordered separately to suit
Weight - 255g a pair

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Shimano Vxl/brm.reglage, STI 7970 Dura-Ace Di2, 2x10 del

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