Shimano Dura-Ace Shimano EW-7972 Dura-Ace Di2 derailleur to

To ensure that the signal goes from the shifter to the derailleurs the reliability of the electric c

Shimano Dura-Ace Shimano EW-7972 Dura-Ace Di2 derailleur to

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 connec

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