About Shimano Dura-Ace Di2 9070
This is Shimano's top of the range groupset, used by professional cyclists.
It is the lightest of the Shimano range but also the most durable over time.
The Dura-Ace groupset has been optimised for excellent power transmission by reducing friction to a minimum.
No compromises have been made on this groupset. The smoothness of the shifting on this groupset remains a reference.
Di2 (Digital Integrated Intelligence) technology ensures ultra-fast, precise and reliable shifting. Di2 offers cyclists a new gear shifting experience.