• I want to drill a hole in carbon bars to fit di2 wires into a stem housing a junction box, 11 speed. Then, I want to run the cables down the steerer and out of a hole into the top or down tube....

    Yes, I did exactly this with aluminium bars and a carbon fork (steerer). I have been fine for 3,5 years now, which included al kinds of gravel, mud, whatever some MTB trails threw at it..
    Drilled the bars:


    Drilled the steerer:

    Had to use a Dremel with a grinding stone for the headtube:

    Than had to pull the di2 wires through after I used some fishingline and lead:

  • Thanks! You've got a nice one coming your was as well :)

    Titanium is a bit softer than steel, so wouldn't be a problem. It took 7 grinding stones though..

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