Shimano Dura-Ace Di2 ST-R9150 double chainring left road bike shifter

Synchro Shift technology is undoubtedly the most striking innovation on the Dura-Ace Di2 ST-R9150 shifter. This technology enables synchronised control of both derailleurs via a single shifter. When the rider operates the left shifter to change chainrings, the rear derailleur positions the chain onto the optimal cassette sprocket. This action reduces the need for gear adjustments and ensures the chain line is always perfect, without crossing.

The design of the new Dura-Ace Di2 shifter has also been revamped. The result is an even more attractive appearance, excellent grip and a weight that remains well-controlled. As for the finish, it is as impeccable as ever.

This shifter is compatible with the Ultegra Di2 11-speed groupset, a great way to upgrade at the best price.

Technical specifications:

- Shimano electronic double-chainring shifter
- Wireless shifter connection
- Synchro Shift technology
- Programming via the E-Tube app
- Colour: black