The flagship and still most revered groupset the world over, DuraAce components stand at the pinnacle of cycling engineering- efficiency, weight, functionality, reliability; you name it and this groupset takes the cake in it. And at this level of electronic 11 speed shifting, it is absolutely what all the pros are riding on, so if you're ready to step up to full competition level, look no further than these components.
Upgrade kit includes everything needed to move from a current 11 speed mechanical drivetrain to an electronic one- front and rear derailleurs, shifters, battery, charger and all the cables and wire harnesses.
The default configuration settings are for an external battery. If you need an internal battery there will be an upcharge.
Note: if your bars are 44cm or wider, the standard 350mm wires will be quite tight, and you may want to step up to 400mm