The Shimano DURA-ACE ST-R9180 brings hydraulic disc braking and Di2 electronic shifting to time-trial and triathlon extensions, solving the tricky cable routing of TT bikes. This is the right-hand lever.

• Model ST-R9180-R (right), DURA-ACE Di2 11-speed, TT/Triathlon dual control lever
• Hydraulic disc brake lever; recommended caliper BR-R9170
• Brake hose kit SM-BH90-JK-SS (black), straight hose joint; Shimano mineral oil
• Reach adjust; funnel bleeding
• Clamp band inner diameter 19.0-22.5 mm
• Integrated shift switch usable without releasing grip; single button each side works with Synchronized Shift
• Multi-shift on/off per switch; customisable and firmware-updatable via E-TUBE PROJECT
• Integrated E-TUBE wire and internal brake hose routing for a clean cockpit