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Description

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.

Features

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.

Specifications


Mfg PartNum: IEWJC302

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Handy for updating firmware on 12sp Di2 wireless shifters

by RichBklyn

Cycling Enthusiast

New York City

I used this to connect my normally wireless shifters to the battery (seatpost) in order to update the L and R shifter firmware. A lot easier than pulling out the battery in the seatpost.

Reviewed 4/15/2023

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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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