Shimano Di2 ST-R8170 + BR-R8170 Rear Disc Brake Kit + Hose

The Shimano Di2 ST-R8170 + BR-R8170 rear disc brake kit with included hose is designed to offer high performance, precise control, and maximum integration on modern road bikes. Thanks to Shimano Di2 wireless technology, this braking system ensures a clean cockpit, improved aerodynamics, and simpler, more efficient maintenance management.

Developed with direct input from professionals, the system offers evolved ergonomics designed to ensure comfort and control even during the most intense rides. The raised hood further improves grip and hand stability, increasing safety and precision during braking.

The brake lever ensures a lighter and smoother action, while optimized modulation allows for more precise management of braking power thanks to a wider control area. This translates into progressive, powerful, and always predictable braking in any conditions.

The kit is compatible with both wired and wireless connections and supports the installation of additional satellite shifters, offering maximum versatility for personalized racing configurations.

The high energy efficiency of the Shimano Di2 electronic system allows for a battery life of between 1.5 and 2 years, using easily replaceable CR1632 batteries.

To improve comfort and quietness while riding, Shimano has increased the pad clearance by 10%, significantly reducing brake noise. Furthermore, the low-maintenance bleeding procedure makes the system practical and reliable even in the long term.

Technical Features

• Shimano Di2 Rear Disc Brake Kit
• Lever model: ST-R8170
• Brake caliper model: BR-R8170
• Brake hose included
• Wireless connection for a cleaner and more aerodynamic cockpit
• Optimized ergonomics developed with professional feedback
• Raised hood for greater comfort and control
• Lighter and smoother lever action
• Improved braking modulation
• Compatible with wired and wireless connections
• Compatible with additional satellite shifters
• High electronic energy efficiency
• Battery life of 1.5 to 2 years
• Easily replaceable CR1632 batteries
• Pad clearance increased by 10% to reduce noise
• Low-maintenance bleeding procedure

The Shimano Di2 ST-R8170 + BR-R8170 kit is the ideal choice for those seeking a reliable, high-performance rear braking system designed to offer maximum control on high-end road bikes.