Shimano Dura-Ace Di2 ST-R9270 STI Shifter with Brake

Achieved wireless while maintaining high-speed shifting. Overwhelming ergonomic performance that embodies the demands of professional riders.
Clean Cockpit: Wireless connectivity makes your bike's cockpit simpler and more beautiful while retaining high-speed shifting

• Uses a CR1632 battery that is easy to replace (battery life: one and a half to two years)
• Overwhelming ergonomic performance improved based on professional rider feedback
• The grip that extends upward improves the anti-slip effect when gripped and the ergonomics in the aero position.
• Compatible with satellite shifters
• Optimized brake control with Servo Wave Technology
• Lighter and smoother lever operation
• Improved modulation by expanding the control range of the brake
• State-of-the-art material
• Carbon fiber brake lever and titanium hardware
• Supports wired connection (E-BIKE application)
• Customize DURA-ACE to the best specifications for you
• You can easily customize the button function with the E-TUBE app
• The reach adjustment function allows easy adjustment to the optimum lever position.