Shimano Ultegra DI2 ST-R8150 Rim Brake 2x12S shifter

Dual control lever for conventional 2x12V Shimano Ultegra Di2 brakes.

Features

• Fast and intuitive shifting.
• Well-defined shifting with ergonomic shift lever.
• Greater control and confidence on your bike when racing
• The shape and consistency of the handguard optimises grip and braking power transmission.

Technical specifications

• Series: ULTEGRA R8100 .
• Shifting control type: dual control lever.
• Remote switch.
• Lever travel adjustment.
• Clamp: 23.8/24.2 mm.
• Firmware updated by E-TUBE PROJECT.
• Connectivity: Di2 wired.
• SD300 port: 2.
• SD300 remote satellite switch port.
• Manufacturer's weight: 295 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.