Shimano Ultegra FC-R8100-P Power Meter Crankset - 170mm, 52/36t, 12-Speed, Hollowtech II Spindle Interface, Black

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
• Simple zero offset calibration with switch on transmitter
• Active temperature compensation

Specifications:

• BB Included: No
• Chainline/Hub Compatibility: 130 Hubs
• Chainring BCD: 110 Shimano Asymmetric
• Color: Black
• Crank Intended Use: Road
• Crank Length (mm): 170
• Defined Color: Black
• Drivetrain Speeds: 12
• Number of Chainrings: Double
• Pedal Spindle: 9/16"
• Rings: 52/36
• Spindle Interface Type: Shimano Hollowtech II