Joined in 2023 
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Wed Mar 27, 2019 5:54 pm
The same ability to customise the shift buttons, shifting ferocity and multi-shifting (within the limits of the hardware), index and set limits, and update the firmware are all present and correct. b) the wires would still have to bend around the corners to get into the groove and the slightest debris in the BB may cause the wires to snag and wear. If your frameset supports disc brakes, great! You can use the shift levers wirelessly, or choose to run them wired instead. Either way, the shift levers you’ll need are:
Dropping down to the small ring suddenly is practically identical in experience, just with the slight hesitancy that’s seen across all Shimano Di2 groupsets. Again, I prefer having too much wire over having too little. The excess wire will be hidden away in the down tube and seat tube, and the performance is the same as that of a shorter wire. Buy the components Whether a 234g difference matters or not will be up to you. If weight is your primary concern above all else, of course, this isn’t where you should be shopping. This means that you’ll have to use the Ultegra or Dura-Ace shift levers. There are no 105 Di2 rim brake shifters. Servo Wave essentially enables the pads to close on the rotor more easily in the earlier parts of the throw, before offering more modulation as you squeeze harder.
If the measured length is 325mm, the next size up is 350 and the correct wire length would be 350 + 50 = 400mm
Support road.cc
Getting the right length Di2 wire is relatively straightforward. You decide where your junctions (if any) and battery go and then measure or estimate the required wire lengths from those points. You’ll also need a crankset, of course. If you’re upgrading an 11-speed bike to 12-speed Di2, you may be considering using your 11-speed crankset with 12-speed Di2. You can change between the shift modes by double-pressing the button on your junction box. When you do this the bike cycles through three modes:
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