Shimano Dura-Ace Di2 ST-R9270/BR-R9270 shift-/brake inheit front wheel left duplex

Shimano`s performance shift / brake system for racing bikes

The new lever ergonomics of the DURA-ACE ST-R9270 Dual Control shift / brake levers offer a new level of comfort and control for racing cyclists. Thanks to the fastest wireless switching capacity and an even more precise brake force regulation, the DURA-ACE sets new standards in terms of performance.

Now equipped with SERVOWAVE brake technology, the DURA-ACE ST-R9270 brake lever offers a degree of controllability and control that is second to none. Wireless shifting ensures the bike looks clear and enables uniquely fast and precise shifting. All of this is integrated in a Dal Control gearshift / brake lever which, thanks to the use of the latest materials, is both light and ergonomic and guarantees optimum comfort and control even under challenging conditions.

Highlights

• Tidy cockpit: The wireless connection optimizes the aesthetics of the bike and enables lightning-fast switching
• Battery life: 1.5 to 2 years with easily replaceable CR1632 batteries in the shift / brake levers
• Unique ergonomics based on professional feedback
• Raised horns improve ergonomics and give the hands more grip
• Compatible with satellite shifter
• SERVOWAVE technology for optimal brake control: Lighter, easy-to-operate lever and improved controllability thanks to the extended brake control range
• Advanced materials: carbon brake levers and titanium parts
• Compatible with cable connection (for e-bikes)
• Possibility to customize the DURA-ACE with adjustable key functions for optimal ergonomics
• The button function can be changed easily via the E-TUBE APP
• Optimal lever position thanks to reach adjustment

specification

Technologies used

In this chapter we explain the technologies that the manufacturer uses for this product.

SERVOWAVE action
The SERVOWAVE brake lever absorbs a lot of braking distance at the beginning of its movement, so that the pads can be guided to the brake disc with little lever travel. After the brake lining is applied, the force transmission factor increases rapidly. The greater part of the lever travel is still available to increase the braking force and to dose it more precisely.

Reach Adjust
The brake lever is equipped with a reach adjustment. This means that the handle adapts to the size of the driver's hand or to his driving style or personal preferences.

DCL - Dual Lever Control
DCL stands for Dual Lever Control (DUAL Control Lever). It has braking and switching functions and is easy to operate. The improved ergonomics are probably even more important for the high standard than additional translations. The technology of the new gear levers brings the stability of Shimano's MTB technology and works so precisely and smoothly that it is possible to shift front and rear with just one finger. This is really a highlight of Shimano Total Integration. To understand that, you just have to experience it for yourself.
The dual control shift / brake levers from DURA-ACE, ULTEGRA and 105 have been optimized and now have, for example, a weight-reduced joint on the inside of the shift mechanism and integration of the shift cable for easier steering. The extremely compact and high-precision manufactured individual parts result in an unmatched switching speed when combined.

scope of delivery

• 1 x Shimano Dura-Ace Di2 ST-R9270 / BR-R9270 shift / brake unit for front or rear wheel (see item description for details)
• 1 x brake line including connection kit
• 1 x fastening material