Shimano Dura Ace - Dura-Ace 7970 - STI - without shift cables - double*

• The most advanced level of shifting technology: at the touch of a switch Dura-Ace Di2 is quick shifting, smooth, and effortless, making for unmatched drivetrain efficiency
• The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused by contaminates, corrosion and stretching, and also provides effortless gear 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 is 255 grams a pair

ShimanoTechnical Help:

Shimano DuraAce Manuals and Service Instuctions.

The video below demonstrates how to locate the spare parts and manuals for Shimano.

Shimano TechDocs Home Page Instructions, Manuals and Exploded Diagrams of Shimano components.

Shimano Tehcnical Support (Provided by Shimano UK agents not Petra Cycles.)

TechDocs documents: Documents starting: EV = Exploded View SI = Service Instructions

Petra Cycles Shimano Help Page

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