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Shimano GRX RX810 PRECISION 3+ Left-Side Power Meter

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Why We Like The Shimano GRX RX810 PRECISION 3+ Left-Side Power Meter

Whether chasing KOMs up steep climbs or riding virtually on Zwift in our living room, the Shimano GRX RX810 PRECISION 3+ Left-Side Power Meter measures and transmits our watts, cadence, and calories directly to our head unit with a +/-1% accuracy rate. It features an excellent battery life of up to 800 hours, an ultra-low and lightweight profile, and ANT+ and Bluetooth connectivity for use with our favorite apps and units. This left-side power meter comes ready to use straight out of the box, needing only to be installed on our Shimano GRX FC-RX810 crankset with the standard Shimano crank installation process.


  • Left-side power meter for Shimano GRX FC-RX810 cranksets
  • Transmits watts, cadence, and calories to our head unit of choice
  • 3 strain gauges measure all forces in the pedal stroke with +/- 1% accuracy
  • Automatic terrain selector detects the surface for better feedback/data
  • Features a 30-170RPM cadence range and a 4,000W power range
  • CR2032 Coin Cell battery offers up to 800 hours of use
  • Compatible with all indoor training apps, such as Zwift, with ANT+ or Bluetooth
  • Locate quickly on an Apple product with the Find My app when not in use
  • Item #FII000N
Shimano GRX FC-RX810
IPX7 waterproof rating, automatic terrain selector, Apple Find My feature, ANT+ and Bluetooth connectivity
Accuracy (+/-)
+/- 1%
CR2032 Coin Cell
Operating Time
up to 800 hours
Claimed Weight
road cycling
Manufacturer Warranty
3 years

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