Shimano Ultegra FC-R8100-P 2x12 Dual-Sided Power Meter Crankset
Product Details
The Shimano Ultegra FC-R8100-P Dual-Sided Power Meter Crankset delivers professional-grade power measurement in a lightweight, race-ready package. Featuring dual-sided power measurement with ±1.5% accuracy, it provides the precise data needed to track performance, refine training, and maximize every ride. Fully integrated into the crank arms, the power meter maintains the clean aesthetics and reliable performance of Shimano's Ultegra 12-speed drivetrain.
An internal waterproof rechargeable lithium-ion battery provides over 300 hours of ride time between charges, while ANT+ and Bluetooth LE connectivity make pairing with cycling computers and training apps quick and seamless. Shimano's proprietary strain gauge technology and fast startup ensure dependable, accurate data collection every time you ride, whether you're training indoors, racing, or chasing a new personal best.
Key Features
- Dual-Sided Power Measurement – Delivers ±1.5% accuracy for precise and reliable performance data.
- 300+ Hour Rechargeable Battery – Waterproof integrated lithium-ion battery provides long-lasting ride time.
- ANT+ & Bluetooth LE Connectivity – Easily pairs with compatible cycling computers and training platforms.
| Specification | Detail |
|---|---|
| Model No | FC-R8100-P |
| Series | ULTEGRA |
| Chainring Combination | 50-34T, 52-36T, w/o chainrings |
| Crank Arm Length (mm) | 160, 165, 170, 172.5, 175 |
| Force Measurement | Right side, Left side |
| Number of Strain Sensors | 24 |
| Cadence Measurement | Magnet |
| Accuracy | ±2% |
| LED for System Status | ✔ |
| Number of Control Buttons | 1 |
| Zero Offset | By control button, By device |
| Active Temperature Compensation | ✔ |
| Battery | Lithium ion |
| Battery Life | 226 h |
| Charging Port | ✔ |
| Charging Cable | EW-EC300 |
| Firmware Update by E-TUBE PROJECT | ✔ |
| Wireless Connectivity | Bluetooth® LE (Cycling power), ANT+ (Bicycle power), Bluetooth® LE custom (*1) compatible with E-TUBE RIDE and E-TUBE PROJECT |
| SD50 Port (pcs) | 0 |
| SD300 Port (pcs) | 0 |
| SD50 Connector (pcs) | 0 |
| SD300 Connector (pcs) | 0 |
| Average Weight | 758g (50-34T), 769g (52-36T) |
| Remarks | Crankset specifications not listed here are the same as FC-R8100. * w/o chainrings. Chemistry: Li-ion. Rated voltage: 3.7 V. Rated capacity: 0.66 Ah (2.442 Wh). |
| Color | Series color |