The DURA-ACE groupset is the result of Shimano's ongoing passion for technology. This is reflected in every single component in the groupset. All components are joined together to work as one, reinforcing each other for unparalleled performance. This is how DURA-ACE achieves ultimate supremacy.
Dura Ace FC-R9100-P Powermeter
The FC-R9100-P delivers world-class power measurement seamlessly designed into the new DURA-ACE HOLLOWTECH II crankset. The dual-sided strain gauges are internally hard wired together for reliable performance in all weather conditions and accurate measurement regardless of pedaling position. Shimano’s integrated approach also ensures simplified maintenance with a single rechargeable battery powering the entire unit and the ability to wirelessly update firmware.
Integrated design delivers system reliability and waterproof performance in all conditions
Dual-side strain gauges are hard wired together for accurate data collection and direct response
±2% strain gauge power measurement accuracy
Stable power measurement system across all pedaling positions
Reliable electrical system that is waterproof in all conditions
Single rechargeable battery for easy maintenance
Easily swap chainrings without affecting power measurement