Shimano Dura Ace DI2 ST-R9250 Rim Brake 2x12S shifter
Dura-Ace ST-R9250 dual control levers for conventional brakes offer 12v shifting with refined ergonomics and exceptionally low weight. The Dura-Ace ST-R9250 dual control levers are the ultimate in reliable performance, thanks to a wired connection and the light weight of conventional brakes. Refined ergonomics and advanced materials underline the racing pedigree of these levers.
Features
- Fast and intuitive shifting.
- Well-defined shifting with ergonomic shift lever.
- Greater control and confidence on your bike in competition.
- The shape and texture of the hand guard optimise grip and braking power transmission.
Technical specifications
- Series: DURA-ACE R9200.
- Shifting control type: Dual control lever for conventional brakes.
- Remote switch.
- Lever travel adjustment.
- Clamp: 23,8/24,2 mm.
- Brake lever: SLR-EV.
- Firmware updated by E-Tube project.
- Wired Di2 connectivity.
- SD300 port: 2.
- SD300 remote satellite shift port: 1.
- CFRP lever.
- CFRP bracket.
- CFRP: Carbon fibre reinforced polymer.
- Producer weight: 230 g (pair).
Technologies
E-Tube Project
E-TUBE PROJECT Cyclist, the original SHIMANO application for mobile devices allows you to customise your bike, update firmware and maintain your bike via a wireless connection to your bike. You can also get detailed maintenance services by connecting your bike via cable with the E-TUBE PROJECT Professional app.
SLR-EV
SLR-EV is the SLR system with a symmetrical dual-pivot brake body. The new short arm brake design uses two bearings and a roller bearing to ensure maximum efficiency in the pivot area and provide more modulation and power for braking. In combination with the BC-9000 brake cable, the new calipers offer 36% more braking power than the previous SHIMANO model.
Reach Adjust
The brake lever is equipped with a mechanism for adjusting the stroke. The distance between the handlebar grip and the lever can be adjusted to suit any size of hand and the rider's individual style and preferences.
Dual Control Lever
DCL stands for DUAL CONTROL LEVER. The lever performs braking and shifting functions and is easy and intuitive to use. Ergonomic innovation is fundamental to the higher standards of Dura-Ace performance compared to additional ratios. The new internal shifting mechanisms owe their robustness to Shimano's MTB technologies, and are so efficient that it is possible to change gears or chainrings at the touch of a finger. In fact, the shifting action represents the ultimate fulfilment of the SHIMANO TOTAL INTEGRATION philosophy, and only those who have experienced it can understand its advantages.