Shimano Di2 Frame Junction Box Components Shimano
SKU: 210000029442
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Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port

$32.99
$32.99 $32.99
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Product Details

The Shimano SM-JC41 Di2 Internal Frame Junction Box 4-Port links to four points with SD50 E-tube wires: front derailleur, rear derailleur, cockpit junction box, and battery mount. Ensure uniform firmware for all Di2 components to prevent malfunctions. Use the Di2 system checker for firmware updates at http://e-tubeproject.shimano.com/.

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