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FEATURES
  • 4iiii makes the lightest power meter on the market. We’re committed to helping you get faster, one gram at a time.

  • A dual power meter measures the power from each individual leg to calculate your total power output.

  • Not everyone has the perfect pedal stroke. With +/- 1% accuracy, 4iiii is the only crank-based power meter to use 3 strain gauges to measure all forces in your pedal stroke.

  • Get more data like pedal smoothness and torque effectiveness to analyze and optimize your pedal stroke.

  • If the weather or climate make riding outdoors tough, your 4iiii power meter can be used with all popular indoor-training apps, such as ZwiftTrainerRoadWahoo SYSTMRouvy, and more. 

SPECIFICATIONS
  • Module Weight Non-drive Side: 9g (0.3oz)

  • Drive Side: 16g (0.6oz)

  • Power Range 0 - 4,000W

  • Cadence Range 30 - 150RPM

  • Communication Protocols ANT+, Bluetooth

  • Operating Temperature 0 - 50°C (32 - 122°F)

  • Storage Temperature -20 - 50°C (4 - 122°F)

  • Battery Type CR2032 lithium ion coin cell

  • Battery Life 100+ hrs

  • Waterproof Rating IPx7, IPx5

  • Length 37.7mm (1.5in)

  • Width 27.6mm (1.1in)

  • Depth 7.5mm (0.3in)

COMPATIBILITY
  • Shimano 105 FC-R7000

  • Shimano Ultegra FC-R8000

  • Shimano Dura-Ace FC-R9100

  • Shimano GRX FC-RX810

  • Shimano XTR FC-M9100

  • Shimano XTR FC-M9120