The Shimano 105 Di2 ST-R7170 Disc Brake Shift Lever brings advanced electronic shifting to a broader range of riders. Designed for 2x12-speed systems, it offers precise, intuitive gear changes and enhanced braking performance in a sleek, ergonomic package. Di2 Electronic Shifting Technology: Experience seamless and accurate gear changes with Shimano’s Di2 electronic shifting. The ST-R7170 lever ensures smooth transitions across your drivetrain, enhancing efficiency and control on every ride. Customizable Ergonomics: With reach adjustment and programmable button functions, this lever allows you to tailor the setup to your unique preferences. Its design ensures optimal comfort and control, whether tackling long distances or quick sprints. Integrated Disc Brake System: The ST-R7170 lever is paired with a disc brake system for powerful and consistent stopping power. The hydraulic braking technology ensures reliable performance in all conditions, giving you confidence on challenging descents. The Shimano 105 Di2 ST-R7170 lever brings cutting-edge technology and ergonomic design to road cycling, offering a premium experience that’s accessible for riders of all levels.