Shimano ST-R9270 Hydraulic Disc Di2 E-Tube Flat Mount Calliper Left Rear

All-new lever ergonomics on the DURA-ACE ST-R9270 dual control levers bring new levels of 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 lightweight and refined ergonomics that provide comfort and control for the most demanding conditions.

Key Features:

• Top of the range, high performance Dura-Ace wireless hydraulic Servo Wave disc brake Di2 STI’s give you control, modulation and power with minimal effort in all riding conditions
• With Di2 technology shifting is easy and precise – just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear
• Wireless connectivity to the front and rear derailleurs for effortless trouble-free gear shifts
• Simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold
• Shifters are lightweight thanks to carbon fibre lever blades, carbon composite bracket body, and a titanium clamp band/fixing bolt
• Drop bar STI with shift buttons located in a near identical place to the positions you’d assume shifting using a mechanical Shimano STI
• Hydraulic brake lever with Servo Wave technology provides excellent stopping power with less effort especially from the hood position
• Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during pad wear
• Finely tuneable reach adjusters for the levers enable custom fitment for all hands
• Free stroke adjustment for pad to rotor contact setting
• Levers use CR1632 batteries which last for approximately 1.5-2 years
• Ports for use with SD300 E-tube electric cables
• Kit contains left hand bled ST-R9270 STI, BR-R9270 flat-mount brake calliper with pads, hoses and mineral oil (without rotors or adapters)

Technologies:

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
The brake lever is equipped with a reach to adjust mechanism. The distance from the 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 borrows the robustness from our MTB technology and is 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.