Ultegra FC-R8100-P Hollowtech II Crankset Powermeter 2/12-speed

On 12-speed drivetrains, your performance data can be recorded precisely using this crankset with a Ultegra FC-R8100-P Powermeter. With a high measuring accuracy of max. +/- 1.5 % deviation, the integrated power meter provides all the necessary data about your pedal stroke. So if you’re an ambitious cyclist looking to unlock your true potential, accurate power and wattage measurement are essential performance tools to help you ride to the front. Collecting reliable performance data in real time helps you monitor and evaluate every detail of your ride to achieve top results in both training and racing.

The extravagant and noble design of the SHIMANO Ultegra crank arms and the unobtrusive integration of the lightweight wattmeter are just a few of the design advantages of the Powermeter crank for performance-oriented road cyclists. Just like the Ultegra FC-R8100 crank without a power meter, the power meter version is also a crank with hollow-forged aluminium arms and Hollowtech II construction, resulting in an optimal stiffness-to-weight ratio.

The integrated sensors measure the power separately for the left and right crank arm. The cadence and other important values such as round pedalling for the performance evaluation are also determined. This means that the FC-R9100-P crank helps you to measure and record power in real time and then evaluate the power data later. The integrated design allows for a quick and easy change of chainrings without affecting the accuracy of the power meter. Bluetooth-assisted communication via smartphones and tablets with the SHIMANO E-TUBE PROJECT platform also ensures easy system checks and firmware updates. In addition to Bluetooth, the power meter also has ANT+ connectivity, ensuring compatibility with a wide range of third-party bike computers and GPS devices.

Details:
Integrated design
Power measurement on both sides
Rechargeable lithium-ion battery (via charging cable)
Easy chainring replacement, as the measuring system is integrated in crank arms and spider
High stiffness due to 4-arm construction and widened crank arm for optimal power transmission
Fast system start and direct feedback
Display of cadence, total power, right-left power balance, round pedalling, torque effectiveness (depends on the connected bike computer)
Wireless communication with ANT+ or Bluetooth LE-enabled receiving devices
Manual zero setting at the touch of a button or via wirelessly connected device
System checks and firmware updates SHIMANO E-TUBE PROJECT platform
Visualisation, display and recording of ride data on the smartphone via the SHIMANO app E-TUBE RIDE

Technical details:
Compatible with 12-speed
Hollow forged aluminium crank arms
Hardened steel axle (Ø 24 mm, Hollowtech II)
Housing width: 68/70 mm
Gear ratio: WITHOUT chainrings!
Chainline: 44.5 mm
Q factor: 148 mm
Bolt circle: 110 mm/ 80 mm (asymmetric)
Battery: lithium-ion, built-in
Charging time: approx. 2.5 hours
Battery life: at least 300 hrs
LED status display:
Measurement method: Strain gauges
Measurement accuracy: +/- 1.5%
Protocol: ANT+ & Bluetooth Smart (LE)
SHIMANO app compatibility: E-TUBE RIDE, E-TUBE PROJECT
Weight: approx. 758 g (170 mm, 50-34)

Available with crank arm length:
170 mm
172.5 mm
175 mm

Please indicate your choice.

In the box:
Crankset SHIMANO Ultegra FC-R8100-P with integrated power meter
SHIMANO crank bolt
Magnet set
Magnetic tool
EW-EC300 charging cable 1.5 m
SHIMANO crank assembly tool TL-FC40

WITHOUT bottom bracket! WITHOUT chainrings!

Optional accessories (recommended):

Chainring:
SHIMANO chainring for Ultegra FC-R8100 crankset (prod. code: 2316986)

Chain:
SHIMANO CN-M8100 XT 12-speed (prod. code: 2286358)

Bearing cups:
BSA/Italian: SHIMANO Ultegra SM-BBR60 (prod. code: 1955804)
PressFit: SHIMANO Ultegra SM-BB72 (prod. code: 1955813)