Shimano Dura Ace di2 st-r9270 Hydraulic Shifter - 2x12v

With the fastest wireless shifting on the market and even more precise brake modulation, DURA-ACE raises the performance bar

The brand-new ergonomics of the DURA-ACE ST-R9270 dual control levers offer new levels of comfort and control for road cycling. Now, with Servo Wave Action brake technology, the new DURA-ACE ST-R9270 brake lever provides unprecedented modulation and control. The wireless shifting ensures a clean bike aesthetic while delivering the fastest and most precise shifting available on the market.

Features

Clean cockpit: wireless connection improves bike aesthetics and guarantees lightning-fast shifting.
Unmatched ergonomics, refined with feedback from professionals.
The raised hood improves ergonomics, and the elongated hood body increases hand support.
Optimized modulation thanks to a larger brake control area.
Carbon fiber lever and titanium structure.
Compatible with wired connection (for e-bike applications).
Easily change button functions with the E-TUBE app.
Series: DURA-ACE R9200.
Actual weight (pair): 350 g.

Technologies

Servo Wave Action
When the SERVOWAVE brake lever is operated, the initial cable pull is quick, so a small lever movement is enough to bring the pads into contact with the disc brake rotor. Then the power multiplication factor rapidly increases at pad-to-rotor contact, so a greater lever movement is used to apply more braking power with higher levels of control.

Reach Adjust
The brake lever features a reach adjustment mechanism. The distance between the handlebar grip and the lever can be adjusted to fit hands of any size and the rider’s style and preferences.

DCL
DCL stands for Dual Control Lever. The lever performs both braking and shifting functions and is easy and intuitive to use.
Ergonomic innovation is key to the highest Dura-Ace performance standards compared to additional gear sets. The new internal shifting mechanisms owe their robustness to MTB technologies and are so efficient that you can change gear or chainring with just a fingertip. In fact, the shifting action represents the ultimate realization of Shimano Total Integration philosophy, and only those who have tried it can understand its benefits.
DURA-ACE/ULTEGRA/105 Dual Control Lever controls have an optimized structure with features such as a lightweight pin section on the inside of the shifting unit and an integrated shift cable to lighten steering. Numerous components have been made compact and precise to ensure unprecedented high-speed performance.