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Shimano Di2 SM-JC40 Junction B Box

USD$21.99 27% off USD$29.99 msrp
Item #: EL250D01
USD$21.99 27% off USD$29.99 msrp
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The Ultegra Di2 junction box can be viewed as the brains of the operation. All of the wires and battery plug into the junction box.
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Get free shipping with your $50 purchase today when you choose Standard Shipping at checkout. Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items

 

Free Shipping Offer

Get free Standard Shipping with your $50 purchase today! Just choose Standard Shipping during checkout.

Please note this offer is only available to physical shipping addresses in the 48 continental United States (no PO Boxes), and oversize charges still apply on some heavy/large items.