Shimano SM-JC40 Di2 External Frame Junction Box 4-Port

★★★★★ 4.3 16 reviews
$37.00
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$37.00
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Free shipping Free 30-day returns
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Product details

Management number 201702586 Release Date 2025/09/29 List Price $18.50 Model Number 201702586
Category
  1. Apparel & Gear
  2. Packs
Shimano SM-JC40 Di2 External Frame Junction Box 4-Port. Shimano Di2 Frame Junction Box
  • Frame Junction Box connects via SD50 E-tube wires to four different points: front derailleur rear derailleur cockpit junction box and battery mount
  • All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions
  • Use Di2 system checker to update component firmware from http://e-tubeproject.shimano.com/

    • Shimano SM-JC40 Di2 External Frame Junction Box 4-Port

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    4.3 out of 5
    ★★★★★
    16 ratings | 7 reviews
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