Shimano Ultegra R8170 Di2 12-Speed Groupset with 4iiii Power Meter
The Shimano Ultegra R8170 Di2 12-Speed Disc Groupset combines electronic Di2 shifting, hydraulic disc braking, and a 4iiii power meter crankset (172.5mm 52/36T) with an 11-30T cassette. **Excluding BB** – bottom bracket must be purchased separately.
Key Features
- 4iiii Precision 3+ Pro power meter: Single-sided measurement in FC-R8100 crankset.
- Semi-wireless Di2: ST-R8170 levers wireless, BT-DN300 battery for derailleurs.
- Hydraulic disc: BR-R8170 calipers with Servo Wave modulation.
- Gearing: 52/36T crank, 11-30T CS-R8100 cassette.
- Shifters: ST-R8170 ergonomic hoods with raised peak.
- Connectivity: E-Tube app for updates and setup.
Technical Specifications
| Component | Details |
|---|---|
| Crankset | FC-R8100 172.5mm 52-36T + 4iiii |
| Cassette | CS-R8100 11-30T 12-speed |
| Shifters | ST-R8170 Di2 hydraulic disc |
| Calipers | BR-R8170 flat-mount |
| Bottom bracket | Excluding BB |

