Shimano Dura Ace Di2 Sprinter Schalt knob 11 speed black-R610

The new DURA-ACE is SHIMANO's lightest, most ergonomic and most accurate component group of all time. It not only provides the finest mechanical performance, but also serves as the chassis for our revolutionary digital Di2 switching system. The additional 11th gear and numerous other improvements allow a truly dominant performance. You enter victories with DURA-ACE.

Significant benefits of the new Dura Ace 9000/9070 Group:

• New 11-speed drive enables precise, professional-tested gear changes
• Newly developed crankset with a 4-arm construction
• New inner cable system reduces sliding resistance
• More effective braking with new SLR-EV brake system

Triathletes or time trial drivers no longer have to decide on a switch position. Numerous combinations are possible thanks to the DURA-ACE Di2's versatile additional switch options. This allows shift / brake levers on the base handlebar to be combined with satellite switches on the extensions.

• Different switch positions ensure that it is easy to switch in any situation
• Fast, accurate, and light shifts with the SW-9071 (one-button operation minimizes movement to maximize aerodynamic efficiency)
• One and two-button units for Aero handlebars