Description
Shimano Ultegra Di2 R8170 2×12 Electronic Road Disc Groupset
The Shimano Ultegra Di2 R8170 groupset represents the latest generation of
Shimano’s electronic road drivetrain technology, delivering professional-level
performance with the efficiency and reliability expected from the Ultegra
platform.
Built around Shimano’s 12-speed Di2 architecture, the system combines fast
wireless cockpit communication with wired derailleur connectivity through the
BT-DN300 battery platform. Together with hydraulic disc brakes and precise
electronic shifting, the groupset provides smooth gear transitions, excellent
braking control and race-ready performance.
Key Features
- Shimano Di2 electronic shifting platform
- 12-speed road drivetrain configuration
- Hydraulic disc brake system with ST-R8170 levers
- Fast and precise electronic shifting response
- Wireless cockpit communication between shifters
- RD-R8150 rear derailleur compatible with wide range cassettes
- FD-R8150 front derailleur for 2×12 drivetrain setups
- BT-DN300 internal battery system
- IceTech brake rotor technology for improved heat management
- Compatible with Shimano E-Tube Project drivetrain customization
Technical Specifications
| Brand | Shimano |
| Groupset Platform | Ultegra Di2 R8170 |
| Speed | 12 Speed |
| Shifting System | Electronic Di2 |
| Rear Derailleur | RD-R8150 (max cassette 34T) |
| Front Derailleur | FD-R8150 braze-on |
| Shift / Brake Levers | ST-R8170 hydraulic disc |
| Brake Calipers | BR-R8170 hydraulic disc brake |
| Brake Rotor | RT-MT800 IceTech 160 mm Centerlock |
| Battery | BT-DN300 internal Di2 battery |
| Connectivity | Shimano E-Tube electronic system |
| Use Case | Road racing and endurance cycling |
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