All-New Lever Ergonomics On The Dura-Ace St-R9270 Dual Control Levers Bring New Levels Comfort And Control To Road Cycling. With Our Fastest Wireless Shifting Available And Even More Precise Brake Modulation, Dura-Ace Redefines Performance.

Now Featuring Servo Wave Action Brake Technology, The New Dura-Ace St-R9270 Brake Lever Delivers Modulation And Control Like Never Before. Wireless Shifting Keeps Your Bike Looking Clean While Offering Our Fastest, Most Precise Gear Changes Available. All Of This Resides In A Dual Control Lever To Employs The Most Advanced Materials To Offer Light Weight And Refined Ergonomics That Provide Comfort And Control For The Most Demanding Conditions.

Features:

– Clean Cockpit: Wireless connection enhances the aesthetic of your bike while keeping shifting lightning fast
– 1.5 to 2 years of battery life with easy-to-change CR1632 shifter batteries
– Unparalleled ergonomics engineering refined with pro rider feedback
– Raised hood peak improves ergonomics, while a longer hood body increases hand support
– Compatible with satellite shifters
– SERVO WAVE technology optimizes brake control
– Lighter, smoother lever action
– Enhanced modulation thanks to an expanded braking control area
– Advanced Materials
– Carbon fiber brake lever and titanium hardware
– Compatible with wired connection (for e-bike application)
– Make DURA-ACE yours with custom button function and adjustable ergonomics
– Easily change button function with the E-TUBE app
– Find your optimum lever position with simple reach adjust

Specifications:

– Average weight: 350 (/pair)
– Firmware update by E-TUBE PROJECT: Yes
– Remote switch: Yes
– Brake lever_Clamp band (mm): 23.8-24.2
– Brake lever_Reach adjust: Yes
– Brake lever_Brake fluid_SHIMANO Mineral Oil: SHIMANO Mineral
– Brake lever_Free stroke adjust: Yes
– Brake lever_Recommended brake caliper: BR-R9270
– Brake lever_SERVO WAVE: Yes
– Brake lever_Brake hose (Kit): SM-BH90-JK-SSR
– Brake lever_Funnel bleeding: Yes
– Brake lever_Hose joint: Straight
– Shifter type: Dual Control Lever
– Battery: Cr1632
– Di2 Connectivity Wired_Di2 Shifting: Yes
– Di2 connectivity wireless_Di2 shifting: Yes
– Port for SD300 satellite shifter (pcs): 1

Technology:

Servowave Action:
– When you pull a SERVOWAVE brake lever, initial pad travel is fast, so little lever movement is needed to bring the pads into contact with the rotor. The power multiplication factor then increases rapidly at the pad-to-rim contact so more of the lever stroke is used to apply greater braking power with improved control.

Reach Adjust:
– Brake lever is equipped with a reach adjust mechanism. The distance from handlebar grip to lever can be adjusted to suit any hand size, type of riding and individual rider preferences.

Dual Control Lever:
– DCL stands for DUAL CONTROL LEVER. It has brake and shifting functions in the system and enables easy operation.
Ergonomic innovation is probably more critical to the higher standard performance than the added gearing. The shift internals borrow the robustness from our MTB technology and are so smooth and effortless that one finger shifts front and rear are possible. Indeed, shifting is the ultimate act of SHIMANO TOTAL INTEGRATION, and simply has to be experienced to be understood.

– The DURA-ACE/ULTEGRA/105 Dual Control Lever have an optimized structure with features that include the lighter weight pivot section in the near side of the shifting unit and the integral shifting cable for lighter steering. Its many component parts are made so compact and precise to achieve unprecedented high-speed performance.