The Shimano 105 ST-R7170 Di2 Shift/Brake lever features Di2 electronic shifting for precise, intuitive gear changes to even more riders.

• Reach adjustment and customized button functions allow you to dial in your ideal ergonomics
• Creates a clean cockpit with wireless connection and enhances the aesthetic of your bike while keeping shifting lightning fast
• Easily change button function with the E-TUBE app
• Raised hood peak improves ergonomics, while a longer hood body increases hand support
• Includes 2 x CR1632 batteries