Shimano Ultegra DI2 ST-R8170/BR-R8170 Shifter-brake Kit Disc

The Shimano Ultegra Di2 ST-R8170 / BR-R8170 Kit delivers the next generation of road bike control with 12-speed electronic Di2 shifting and hydraulic disc braking. Featuring redesigned ergonomics, the ST-R8170 levers are slimmer and more comfortable for all-day riding. Paired with BR-R8170 calipers, the system offers powerful, consistent stopping with quieter operation and improved clearance. With lightning-fast shifting and all-weather braking, this kit sets the standard for modern performance road bikes.

Key Features

• Complete shifter + hydraulic disc brake caliper kit.

• 12-speed Di2 electronic shifting for instant, precise gear changes.

• ST-R8170 lever ergonomics improved for smaller hands and comfort.

• BR-R8170 calipers provide stronger braking and improved pad clearance.

• Wireless Di2 connectivity reduces cockpit clutter.

• Rechargeable battery system with long runtime.

• Perfect for performance road, endurance, and racing setups.