Offering the precision and functionality needed for scientific training, the Shimano Ultegra FC-R8100 Power Meter Crank Arm Set provides dual-sided measurement that is accurate within 1.5%. Its long battery life, easy recharge, and ANT+ and Bluetooth LE connectivity makes using and recording your workouts easier than ever.
- 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
- Quick and easy start-up process
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Number of Chainrings: Double
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Color: Black
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Pedal Spindle: 9/16"
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Crank Length (mm): 172.5
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Crank Intended Use: Road
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Chainline/Hub Compatibility: 130 Hubs
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Rings: 50/34
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Spindle Interface Type: Shimano Hollowtech II
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Drivetrain Speeds: 12
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Defined Color: Black
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Chainring BCD: 110 Shimano Asymmetric
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BB Included: No
