Shimano Dura-Ace Di2 Electronic Shifting
The ST-R9270 lever is part of Shimano’s top-tier road groupset platform, delivering extremely fast, accurate and consistent 12-speed electronic shifting. Di2 eliminates traditional mechanical shift cable friction, providing precise gear changes in all weather conditions.
Servo Wave Hydraulic Braking
Servo Wave technology changes the relationship between lever pull and pad movement to improve brake control. It helps bring the pads into contact quickly, then gives the rider a wider modulation range for smoother braking control.
Benefits include:
- Better braking feel
- Improved control on descents
- More confident braking in wet weather
- Enhanced modulation during fast group rides and racing
BR-R9270 Mono-Body Rear Caliper
The BR-R9270 caliper uses a compact mono-body construction designed to reduce weight while increasing stiffness. This improves braking response and helps provide a consistent lever feel under heavy braking.
Wider Pad Clearance
Shimano increased pad-to-rotor clearance in this generation to help reduce brake rub. This is especially useful for riders using lightweight road disc wheels where small rotor movement or heat expansion can otherwise create unwanted noise.
Mineral Oil Hydraulic System
Shimano mineral oil braking systems are known for smooth lever feel, predictable performance and workshop-friendly servicing. For riders completing high-kilometre road training, regular maintenance is straightforward for experienced bike mechanics.
Ergonomic Hood Shape
The revised Dura-Ace hood shape provides improved hand support, better grip security and increased comfort for long rides. This is particularly beneficial for riders spending hours on the hoods during endurance rides, bunch rides and road races.
Carbon Lever Construction
The carbon brake lever helps reduce weight while maintaining the premium feel expected from Shimano Dura-Ace components.
