12-speed crankset Shimano Ultegra FC-R8100-P

Scientific training requires accurate yet easy-to-use measurements, qualities found in the ultegra r8100 power sensor. power measurement on both sides of the crankset is accurate to within 2.0%, and calibration is an easy rapide process. and perhaps most importantly, the long battery life, easy charging, and ant+ and bluetooth® connectivity make using and recording your workouts easier than ever.

• Built-in, waterproof, rechargeable Li-ion battery


• Up to 300+ hours of use * Depending on ANT+ / Bluetooth®LE settings


• Accurate data collection


• Gauge accuracy tolerance of ± 2.0% over the entire calibration range


• Proprietary strain gauge


• Faster start-ups


• Simplified calibration with a switch on the transmitter


• Active temperature compensation


• Software automatically compensates for temperature changes


• New force vector data makes it the optimal training tool to analyze and improve pedal stroke efficiency


• With SHIMANO CONNECT Lab, you can analyze and visualize your training and power data


• Chain guard: Without CG


• Color: Color series


• Gear combination: Without chainring


• Packaging: Individually packaged