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hippy
PhilDAS
@Prz
I have recently bought a 931 Equilibrium Disc (frame is Di2 compatible) and suddenly found used ST-R785 shifters for about 70 GBP here. Now contemplating whether to go Di2 and swap the current RS505/5800 drivetrain for Ultegra Di2. What parts exactly would I need apart from derailleurs, and is it good to buy everything used or something particular is better bought new with warranty? Also how much do you estimate would I need to spend to get all the needed parts?