Shimano Ultegra FC-R8100-P Power Meter Crankset (Grey) (2 x 12 Speed) (170mm) (50/34T)

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Price: $1,159.99

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With the Ultegra FC-R8100-P Power Meter Crankset, Shimano once again ups the ante and offers top-level data analysis. With a fully waterproof design, a rechargeable lithium-ion battery, and Bluetooth LE and ANT+ connectivity, the FC-R8100-P is rider-friendly and ready for whatever riding and racing comes its way. Left/right balance sensors combined with the Shimano Connect Lab web service provide a new level of detail into riding stats.

Note: Images are for illustrative purposes. Specifications in photos may not be correct. Cranksets that do not include chainrings are still pictured with chainrings even though they are not included.


  • Integrated, waterproof, and rechargeable Li-ion battery
    • Up to 300+ hours of ride time (Depending on ANT+/Bluetooth LE settings)
  • Accurate data collection
    • < 1.5% strain gage accuracy throughout the entire calibration range (Depending on ANT+/Bluetooth LE settings)
    • Proprietary strain gauge
  • Possible to start quickly
    • Simple zero offset calibration with switch on transmitter
  • Software automatically compensates for temperature changes

Speed: 2 x 12 Speed
Spindle Diameter: 24mm
BCD: 110mm
Chainline: 44.5mm
Q-Factor: 148mm
Threaded Bottom Bracket Shell Width: 68/70mm
Crank Arm Material: Aluminum
Connectivity: Bluetooth LE, ANT+
Run Time: Up to 300+ Hours
Color: Grey/Black
Weight: 769g (52/36T, 170mm), 758g (50/34T, 170mm)

Check out our full selection of Shimano Ultegra 12 Speed Di2 Parts.

This product was added to our catalog on January 13, 2023