When you want nothing but the best, the Dura-Ace R9200 Di2 electronic groupset is the right choice. Shimano's top-tier road group, this is what Tour de France pros ride. It's light, fast, and performs like no other. Whether you are upgrading your parts or customizing your dream build, Dura-Ace Di2 is the right call.
IMPORTANT! When using the E-Tube Project app, make sure to always select "disconnect" when you are done making updates to your bike. DO NOT QUIT THE APP or walk away from the bike with your phone while updating.