Shimano Ultegra FC-R8100-P 12-Speed Power Meter Crankset - 172.5 mm, Without Chainrings

Shimano Ultegra FC-R8100-P: power measurement for your training

⚡ The Shimano Ultegra FC-R8100-P is a 2x12-speed road crankset equipped with a dual-sided power meter, designed for cyclists who want to collect accurate data and analyse their performance during training.

This configuration features 172.5 mm crank arms and is supplied without chainrings, allowing you to complete the drivetrain according to your preferred setup and the specified compatibility requirements.

Dual-sided power meter

📊 The integrated power meter measures the force applied on both sides of the crankset.

Shimano specifies an accuracy of ±2.0% across the calibration range, providing useful data for monitoring training intensity and analysing your pedalling performance.

Calibration and temperature compensation

🎯 Zero offset calibration can be performed quickly and easily using the switch on the transmitter.

The system also features active temperature compensation, which automatically compensates for temperature variations to support measurement accuracy.

Rechargeable battery and connectivity

🔋 The power meter uses an integrated, waterproof and rechargeable lithium-ion battery.

ANT+ and Bluetooth LE connectivity allows you to connect the system to compatible devices for collecting and recording training data.

Shimano specifies up to 226 hours of battery life, depending on the ANT+ and Bluetooth LE settings.

Pedalling analysis with Shimano

📈 The system also provides force vector data, which can be used to analyse and improve pedalling efficiency.

Through SHIMANO CONNECT Lab, you can analyse and visualise training and power data.

HOLLOWTECH II technology

⚙️ The crankset uses HOLLOWTECH II technology, developed by Shimano to achieve a balance of stiffness, strength, weight and rotational efficiency.

The crankset design is intended to support efficient power transfer throughout the pedal stroke.

Configuration without chainrings

🔧 This version is supplied without chainrings. Chainrings must therefore be purchased separately, checking compatibility with the FC-R8100-P model and the intended drivetrain configuration.

Shimano lists 50-34T and 52-36T chainring combinations for the FC-R8100-P series.

Technical specifications

What's included

• ⚙️ 1 x Shimano Ultegra FC-R8100-P 172.5 mm crankset
• 📊 Integrated dual-sided power meter

Note: this configuration is supplied without chainrings. Check the compatibility of the crankset, chainrings and bottom bracket with your drivetrain before installation.