Shimano 105 ST-R7170 Di2 Disc Brake Lever & Shifter mmx_brake_lever_clamp It's built to race with

It's built to race with geometry that keeps you comfortable on the climbs and perched for the attack

while in-moulded impact foam adds protection against high-speed crashes—working together as a 3-in-1 safety system

this kit upgrades your A1 brakes with the next-generation B1 SwingLink Gold architecture — delivering smoother

and CR2032 battery

Fit & Integration

Shimano 105 ST-R7170 Di2 Disc Brake Lever & Shifter mmx_brake_lever_clamp It's built to race withThe new Shimano105 shift brake lever features Di2 electronic shifting for the first time, bringing precise, intuitive gear changes to even more riders. Reach adjustment and customized button functions allow you to dial in your ideal ergonomics. Clean cockpit: Wireless connection enhances the aesthetic of your bike while keeping shifting lightning fast Longer lasting. Uses two CR1632 batteries (battery life: 3. 5 to 4 years)(Initial shifter batteries