Shimano Dura-Ace DI2 Cable SetThis externally routed Shimano Dura-Ace Di2 Cable Set is ideal for upgrading your current bike to Dura-Ace Di2 if it does not feature the Di2 specific internal cable routing. To ensure that the signal goes from the shifter to the derailleurs, the reliability of the electric cable has been proven by repeated field tests in various riding conditions, including extreme temperatures, rain,mud, and cobble stone roads.The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting caused by contaminates, corrosion and stretching, but provides effortless gear shifts. Dura-Ace Di2 requires 2 cables: a handlebar cable set to connect the shifters to a battery indicator junction box or FlightDeck, and the other to connect the handlebar cable to the battery and derailleurs.Features: Full E-Tube type Shimano Di2 cable kit For use with non-Di2 specific frames Cable ties and guides includes to route wires neatly along your bike's frame Compatibility: Road and mountain bike (MTB) E-Tube type Shimano Di2 electronic drivetrain componentsA 2 year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.