The DURA-ACE groupset is the result of Shimano's ongoing passion for technology. This is reflected in every single component in the groupset. All components are joined together to work as one, reinforcing each other for unparalleled performance. This is how DURA-ACE achieves ultimate supremacy.
Dura Ace Di2 ST-R9180 STI
Electronic Dura Ace Di2 Dual Control Levers 2x11-speed - especially for time trial and triathlon bars. The switching operation can be initiated with the hands on the brake lever. The ST-9180 provides switching from several positions and during braking. The lever is made of carbon fiber reinforced polymer (CFRP) and offers reach adjustment. A single button on each side of the shift lever is designed to work with Synchro Shift. Each switch is available with multi-shift on/off. Integrated E-TUBE cable and internal brake cable routing ensure for enhanced cockpit aesthetic and aerodynamics.
Included in delivery: left TT / Triathlon Dual Control Lever
Material: aluminum, carbon fiber reinforced polymer (CFRP)
Weight supplement: manufacturer's information