Shimano EW-SD300 E-Tube Di2 Wire
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$27.99
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Shimano EW-SD300 E-Tube Di2 Wire, With the release of Shimano's updated Dura-Ace and Ultegra 12-speed Di2 drivetrains comes a new e-tube wire that's based on technology developed for Shimano's industry-leading e-bike systems. The SD300 wire is more compact and lightweight than previous e-tube wires and it comes in a wide variety of lengths so you can connect your derailleurs to the Di2 battery regardless of frame size or shape.