• oh and to connect two tt levers to a di2 system presume i need two cables to connect to the 3 port junction box , then one down to a junction box and then another cable to the rear and only deraullier, i have another di2 bike so if a front der is needed for setup thats not a problem.

  • You dont need a front mech at all for 1x.

    Also the TT shifters have cables attached to them already so you don't need to buy those.

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