With the first integrated power meter, you can expect extremely accurate data. The R9100 cranks set the highest standards for stiffness and lightness. It does this through its broader Hollowtech II arm and a more reinforced outer chainring on its unique asymmetrical four-arm spider construction.
Shimano's R9100 series crankset achieves the ultimate in optimal power transfer. Plus, all the electronics are held within a small, easily removed outer cap. The G3 is accurate to within +/-1.5%, and is ANT+ capable for use with your favorite compatible cycling computer (sold separately). The low-profile G3 hub is made of light, durable aluminum with wide flange spacing for a great wheel. Make the most of your time on the bike - nail your intervals, stay within your targeted zones for long rides, and track your Training Stress Score (TSS) and Chronic Training Load (CTL) for long-term gains and reaching your goals. Some makes you faster! PowerTap’s proven, 325-gram PowerTap G3 Hub does both. Plus, the independent measurement opens the possibility for a new set of pedaling metrics previously unavailable to help give you the ultimate competitive edge. CycleOps 2 Garmin 6 Kurt Kinetic Trainers 2 Pioneer 5 PowerTap 9 Quarq 6 Show More Brands Rotor 1 Shimano 1 Sigma Sport 1 SRAM 2 Show Fewer Brands. 1 mounting instruction manual in various languages. The P1 also features dual band ANT+ and Bluetooth SMART for compatibility with a multitude of head units and smart devices. The simple one-piece design easily mounts to any crank and does not require calibration nor installation angle setting, providing a true “plug-and-play” experience. The P1 pedal is a simple, intelligent and uncompromising design that provides the same proven PowerTap accuracy and reliability.
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