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Shimano Dura-Ace/Ultegra Di2 SM-JC41 Internal Wire Junction Box
Shimano Dura-Ace/Ultegra Di2 SM-JC41 Internal Wire Junction Box
Regular price
$43.96
Regular price
$54.95
Sale price
$43.96
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The Shimano Dura-Ace/Ultegra Di2 SM-JC41 Internal Wire Junction Box is an essential part of the Di2 electronic shifting system. This internal wire junction box connects and stores the wires to all Di2 components and allows the system to operate harmoniously. It provides a secure connection of the wires and ensures smooth, quick shifting with each push of a button.
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