Shimano Dura-Ace FC-R9100-P Power Meter
±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
Bluetooth and ANT+ wireless communication
Currently, we have 167.5mm, 170mm, 172.5mm, 175mm、177.5ｍｍ and 180mm in stock.