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With Shimano's first integrated power meter, the Shimano Dura-Ace FC-R9100-P Crankset, you can expect extremely accurate data. It retains its unique asymmetrical four-arm spider construction, but with a 'brain' mounted on the inside. On its crank arm are the strain gauges, working perfectly in sync with each other, so you can use the extremely precise power data to improve your performance. By gathering real-time accurate and reliable power output data, you can track and analyze every detail of your ride. You can then use this potent information to tune your training and racing for maximum results. Power meters are one of the fastest growing technologies in cycling. In just a few years, they have moved from being pro-only equipment to affordable training aids for amateur racers and keen recreational riders. The Shimano FC-R9100-P power meter guarantees reliability. It boasts a completely sealed, crank-integrated design that is waterproof in all conditions. The built-in battery is recharged by a small magnetic adapter, so there is no cover to open. The direct instant response system ensures accurate data collection for stable power measurement at various stepping positions, plus a simple reset by a switch on the transmitter. Compatible with 3rd party displays using Bluetooth / ANT technology. Power measurement accuracy: +/- 2%.
Lengths: 170, 172.5, 175mm
Chainrings: 34x50T, 36x52T, or 39x53T
Weight: 694 grams
Dura Ace 9100 Bottom Bracket BB-R9100 or SM-BB92-41B sold separately