SHIMANO Ultegra FC-R8100-P Hollowtech II Power Meter 12-Speed Crank Arms

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: 12 Speed
Spindle Diameter: 24mm
BCD: 110mm
Chainline: 44.5mm
Q-Factor: 148mm
Threaded Bottom Bracket Shell Width: 68/70mm
Compatible Chain: CN-M8100
Crank Arm Material: Aluminum
Connectivity: Bluetooth LE, ANT
Run Time: Up to 300 Hours
Includes: EW-EC300 Charging Cable, Chainring Fixing Bolt
Not Included: Chainrings, Bottom Bracket

Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.