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Stages Cycling
Shimano GRX RX810 L Gen 3 Power Meter Crank Arm

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Shimano GRX RX810 L Gen 3 Power Meter Crank Arm

Gravel riding takes us to some incredible places and roads, and that doesn’t mean our training takes a back seat. If like us, you've recently swapped over to a GRX drivetrain, the Stages Shimano GRX RX810 Power Meter ensures you can get all of the data you need to keep training on track, without the wince-inducing price tag. It collects data with its easy to install left-side power meter to deliver tangible information and reliable numbers to improve your ride, and overall fitness.

The key behind this crank arm is the little power meter pod affixed to its inner face, which takes what originally was a standard Shimano GRX RX810 crank arm to the next level and adds the ability to gather pinpoint power data to better analyze your ride. It utilizes a blend of strain gauges and an accelerometer to gather position and force data 64 times per second and deliver power readings with a claimed +/- 1.5% accuracy, half a percent more accurate than previous models, and right in line with what we'd expect from any quality power meter.


  • GRX RX810 left-side power meter for GRX drivetrains
  • Measures power with +/- 1.5% accuracy with Active Temperature Compensation
  • Accelerometer measures cadence internally
  • Communicates via Bluetooth Smart and ANT+ wireless protocols
  • Pairs with Stages Power App for firmware updates and zero resets
  • Stages Cycling brings power data into an affordable price range
  • Item #SGCA03U
[cranksets] all GRX models, [frame] most frames, [device] ANT+, Bluetooth Smart Ready, [software] Stages Link, Training Peaks, Strava, Garmin Training Center, others
Active Temperature Compensation, Individual meter calibration
Accuracy (+/-)
coin cell: CR2032
Operating Time
200+ hours
Claimed Weight

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