• This is a 3-port junction. It is what my shifters plug into.

    Junction B is for the two derailers. If you are running more shifters you need the 5-port. If none of that answers you question then I don't understand your question.

  • Nah you answered I need the 5 port.

    Hey @andyp want to trade that 5 port junction box on the Cayo for a 3 port I have? Guess you won't be running tt shifters.

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