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Shimano 2 Port Junction EW-JC302
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2 Port Junction EW-JC302

Mfg PartNum:IEWJC302
  (1 customer reviews)
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A Crucial Connection In The Di2 Ecosystem

The Shimano 2 Port Junction EW-JC302 Junction allows you to connect two EW-SD300 electric wires to each other. The wires are fixed by a plug connection.


  • Series: EP8 EP800 Series
  • Weight: 5g
  • E-Tube ports: 2
  • E-Tube Port type: SD300
  • Type: Junction B

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


Mfg PartNum: IEWJC302 

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Perfect for updating 12 speed shifters
by Brian g

To update 12 speed shifter software, disconnect wire from front derailleur, connect this junction to wire, then connect a second wire to the shifter. Use Shimano software. Boom.

Reviewed 3/6/2023
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