The Ultimate Shimano Road Performance Experience

Take your road bike build to the highest level with the Shimano Dura-Ace Di2 ST-R9270 12-Speed Shifter and Flat Mount Caliper, combining Shimano’s flagship electronic shifting technology with powerful hydraulic disc braking performance.

Designed for professional racing and the most demanding performance riders, the Dura-Ace R9270 Di2 system delivers lightning-fast shifting, refined ergonomics, exceptional braking control and a lightweight premium construction.

The result is the ultimate connection between rider and machine — precise shifting when every second counts and confident braking through every corner.

Shimano Dura-Ace Di2 12-Speed Electronic Shifting

Precision At The Push Of A Button

Shimano Dura-Ace Di2 represents the pinnacle of road cycling drivetrain technology, delivering instant, accurate and effortless gear changes in all conditions.

The ST-R9270 dual control lever provides:

• Ultra-fast electronic shifting
• Consistent shifting performance under load
• Wireless communication with the Di2 system
• Customisable button functions
• Seamless integration with Shimano’s 12-speed drivetrain

Whether sprinting out of corners, climbing steep gradients or racing at full pace, Dura-Ace Di2 ensures every shift is perfectly executed. 

Advanced Ergonomics For Maximum Control

The ST-R9270 lever has been redesigned from the ground up with professional racing feedback, creating Shimano’s most comfortable and aerodynamic hydraulic disc brake lever yet.

Key improvements include:

• Larger hood shape for improved hand support
• Better grip and control from multiple riding positions
• Reduced hand fatigue on long rides
• Adjustable reach settings
• Free stroke adjustment for personalised braking feel

The refined design provides confidence whether riding in the drops during a descent or holding the hoods during long endurance efforts. 

Powerful Hydraulic Disc Braking

Paired with Shimano’s BR-R9270 Flat Mount Hydraulic Disc Brake Caliper, this system delivers exceptional stopping power, modulation and reliability.

Featuring Shimano’s advanced braking technology:

• Lightweight flat mount design
• Hydraulic braking performance
• Shimano Mineral Oil system
• Servo Wave technology
• Improved pad clearance
• Easy funnel bleeding system

The result is smooth, controlled braking with outstanding heat management for race conditions and long mountain descents. 

Shimano Di2 Wireless Cockpit Technology

The Dura-Ace R9270 platform combines the reliability of Shimano wired drivetrain connections with wireless communication between shifters and the Di2 system.

Benefits include:

• Cleaner cockpit appearance
• Easier installation
• Customisable shift settings
• Long battery life
• Firmware updates through Shimano E-TUBE PROJECT

The ST-R9270 also supports satellite shifters, allowing riders to add additional controls for sprinting, climbing or time trial positions. 

Built For The World’s Fastest Riders

Dura-Ace is Shimano’s no-compromise race platform, developed for riders who demand the absolute best.

Ideal for:

• Professional race bikes
• Premium carbon road builds
• Grand Fondo machines
• Performance endurance bikes
• Custom flagship builds

Every component is engineered around one goal — maximum speed, efficiency and control.

Key Features

• Shimano Dura-Ace Di2 ST-R9270 12-speed shifter
• BR-R9270 hydraulic flat mount brake caliper
• Wireless Di2 shifting technology
• Shimano Servo Wave braking
• Reach and free stroke adjustment
• Carbon composite lever construction
• Shimano Mineral Oil hydraulic system
• Satellite shifter compatible
• Shimano E-TUBE PROJECT compatible
• Premium race-level performance

Specifications

Who Is The Shimano Dura-Ace Di2 ST-R9270 For?

The Shimano Dura-Ace Di2 ST-R9270 Shifter and Caliper is designed for riders who demand:

• The highest level of Shimano performance
• Professional-level electronic shifting
• Lightweight race-ready components
• Premium hydraulic braking control
• A flagship custom road bike build

If you are building your dream bike, the Dura-Ace R9270 cockpit is the benchmark for precision, reliability and performance.