4iiii Precision 3.0 RX810 GRX Powermeter
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4iiii Precision 3.0 RX810 GRX Powermeter4iiii Precision 3.0 RX810 GRX Powermeter
Code: 8718280091
4iiii Precision 3.0 RX810 GRX Powermeter
Whether you are fighting for a Kona slot, spending countless hours on the indoor trainer or striving for a personal best; one thing 4iiii know, success takes time.
With up to 800 hours of battery life, +/-1% accuracy and backed by 4iiii's legendary 3-year warranty, the Precision 3 Powermeter will be your trusted training tool for years to come.
Accuracy In 3D
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.
Ultra Low Profile
With an ultra low profile design, the Precision 3 is compatible with more bike frames than ever before.
Indicator Light
At a glance, you can now see when your power meter has turned on, performed a successful Zero-offset, or has a low battery. Although, don’t expect to see that low battery indicator for a while!
Based in the foothills of the Canadian Rockies, we were tired of training tools not designed to work in our tough environment. With an IPX7 waterproof rating you can be assured that your power meter can handle the toughest conditions.
ANT+ & Bluetooth
Get the same numbers training inside and outside. The Precision 3 Powermeter is both ANT+ and BLE compatible so you can use it on your preferred head unit and favorite indoor training app.
  • Industry leading battery with 800 hours of battery life
  • Product status indication LED light – for wake up (green), zero offset (blue) and low battery (red)
  • Patented 3D Strain Gauge technology to deliver +/- 1% accuracy
  • Ultra slim design to fit almost every frame
  • Legendary 3 Year Warranty
  • Waterproof, durable, designed and tested in the Canadian Rockies for the harshest conditions
  • Lightest power meter on the market at only 9g
  • Backwards compatible with current Precision Drive Side Powermeter
  • Active temperate compensation
  • Over the air feature and firmware upgradability
  • Coin cell powered, CR2032
  • Compatible with 3rd party training apps such as Zwift, TrainerRoad, SYSTM, and more
  • Accuracy: +/- 1%
  • Battery Type: CR2032 Coin Cell
  • Battery Life: Up to 800 hours
  • Waterproof Rating: IPx7
  • Cadence Range: 30 - 170 RPM
  • Power Range: 0 - 4000 Watts
  • Height: 5.5mm
  • Weight: 9g
  • Operating Temperature: 0 to 50 °C
  • Communication Protocols: ANT+, Bluetooth
In The Box
Once your ride-ready Precision 3 powermeter arrives, it just needs to be installed on your bike using the standard Shimano crank installation process. Connect a headunit or computer, and you can start riding with power!