We’ve seen some pretty crazy mods to Di2 over the years, from single button up-or-down shifting that automatically selects the best gear combo to custom buttons integrated into non-stock placements. Those are cool, but for most of us, just being able to fine tune the Di2 we already have is all the hacking we’re comfortable doing.
Fortunately, Shimano makes it pretty easy for dealers to help you customize your system. Unfortunately, they’ve not done the best job spreading the word to riders that such options are available, largely leaving it up to the bike shops and resellers to convey the message at the time of purchase.
To do that, they need the software and SM-PCE1 adapter from Shimano, which connects their computer to the Di2 system. Those allow them to run diagnostics, updated the firmware and customize the way it works. Our local Trek Bicycles Greensboro just happens to have the device, so we brought in our 6770 Ultegra Di2 group for a long overdue update.
Shift past the break to see how it works and what your options are…