Shimano makes synchronised shifting available in Ultegra Di2 and older Dura-Ace Di2

New battery pack works with older systems and includes chip to handle synchronised shift patterns

One of the standout new features of the latest Dura-Ace Di2 R9150 electronic road bike groupset is its ability to provide synchronised shifting. This means that when you make an upshift or a downshift, the mechanism determines whether a change between the larger and smaller chainring is needed too, or will be more effective, so that you end up with less cross-chaining and a more mechanically efficient chainline.

It also means that you can set both your left side shift levers to shift you down your gears and both your right side levers to shift you up, the system dealing with the required front and rear mech changes.

Thank you for reading 20 articles this month* Join now for unlimited access

Enjoy your first month for just £1 / $1 / €1

*Read 5 free articles per month without a subscription

Join now for unlimited access

Try first month for just £1 / $1 / €1