Shimano Dura-Ace FC-9200-P Power Meter Chainset

Shimano Dura-Ace FC-9200-P Power Meter Chainset Working extensively with the world’s finest professional cycling teams; Shimano has created the Dura-Ace FC-9200-P Power Meter Chainset. Seamlessly integrated into both crank arms and completely sealed from the weather; the power measuring strain gauges are precisely calibrated to achieve power readings accurate to within +/-1.5%. Additionally; independent measurements from both legs are monitored; allowing the rider to address particular pedalling imbalances if necessary. The power readings are communicated in real-time to compatible bike computers via the wireless ANT+ and Bluetooth protocols; while the rechargeable internal battery can last for up to 300 hours of riding between charges. A simple zero offset calibration procedure ensures rides start with exceptional accuracy; and the active temperature compensation feature keeps power readings consistent through all conditions. HollowTech II aluminium crank arms are light but incredibly stiff; and the chainrings have refined tooth profiles to grant extra efficiency when used with a 12-speed chain. The HollowTech II 24mm diameter spindle finishes the design; for excellent power transfer and bottom bracket compatibility.