Shimano Ultegra Di2 disc brakes. Precision meets performance.
Experience the perfect symbiosis of electronic shifting and hydraulic braking with the Ultegra Di2 ST-R8170/BR-R8170. This high-end component brings you wireless 12-speed shifting and superior braking performance for your most demanding rides.
Wireless revolution for your drive
The new Ultegra Di2 generation sets new standards in speed and precision. With shifting 58% faster than its predecessor and revolutionary Hyperglide+ technology, you'll experience seamless gear changes even under maximum load. The wireless connection ensures a clean cockpit and significantly simplifies maintenance.
Servo Wave Technology for optimal braking performance
The BR-R8170 brake caliper integrates Shimano's proven Servo Wave technology, offering a faster pressure point and improved modulation. With 10% more clearance between the pad and rotor, you reduce brake rub to a minimum. The One-Way Bleeding System makes maintenance a breeze.
Ergonomics and comfort reimagined
The redesigned ergonomics of the ST-R8170 shifter offer an even more comfortable grip and more precise brake modulation. The extended brake lever range gives you greater control, while the carbon composite construction reduces weight. Reach and free stroke can be individually adjusted using a 2mm Allen key.
specification
| feature | Description |
|---|
| scope | road bike |
| Brake type | Hydraulic, 2-piston |
| brake fluid | Shimano mineral oil |
| Color | Black |
| Weight brake caliper | approx. 136g |
| material | Aluminum, carbon composite |
| Assembly | Flat Mount |
| Switching system | Electronic, semi-wireless |
| series | Ultegra R8100 |
| Power supply to gearshift lever | CR1632 button cell (1.5 years operating time) |
Scope of delivery
- ST-R8170 Di2 right shift lever with integrated brake lever
- BR-R8170 Hydraulic Rear Brake Caliper (Flat Mount)
- Ice-Tech resin brake pads with cooling fins
- CR1632 button cell
