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Stages Cycling Shimano Saint M820 G2 Power Meter Left Crank Arm

★★★★★ ★★★★★

From only £17.87 per month

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Product ID: 811245

For downhill riders with Shimano Saint cranks, the Stages Cycling Shimano Saint M820 G2 Power Meter Left Crank Arm will allow you to monitor your training and enhance your racing performance.

Adding only 20 grams to your existing setup, the housing is strong enough to withstand years of use. With a high accuracy of ± 2%, Active Temperature Compensation and IPX7 water resistance, you can be sure of reliable power readings in all conditions.

Stages Cycling Shimano Saint M820 G2 Power Meter Left Crank Arm

Train like the pro's so when it comes to racing, you'll smash those downhill performances, with Stages Cycling's Shimano Saint M820 G2 Power Meter Left Crank Arm.

Compatible with Shimano Saint cranks, this is the ultimate training tool and only adds 20 grams to your existing setup. The housing is durable, slim and strong, and the low profile design has a robust door interface so this crank arm is built to outlast the toughest, most demanding rides, year after year.

An accuracy of ± 2%, and Active Temperature Compensation, mean you can rely on your power stats, and reduces the chances of data anomalies when the mercury rises and drops. An IPX7 water resistance rating ensures the unit remains efficient, even in the wettest conditions.

Measuring power up to 2500 watts and cadences between 20 and 220 rpm, this crank caters for ALmost every riders needs. The battery life is over 200 hours and when it does need replacement, this can be done easily and quickly with no need for extra tools.

Data can be transferred to head units via ANT+ and Bluetooth Smart so you'll be able to see your performance in real-time, right in front of you. The software can be kept up-to-date thanks to wireless firmware upgrades and can be synced with a number of third-party apps including Training Peaks, Garmin Training Centre and Strava.


  • Device Compatibility: ANT+, Bluetooth Smart Ready

  • Software Compatibility: Stages Link, Training Peaks, Strava, Garmin Training Center and others

In the box:

  • Power meter
  • CR2032 coin cell battery
  • Product Identification Card with Serial Number and ANT+ I.D. Number
  • User Guide

Is my bike compatible with Stages Power Meters?

To help find your current crank model, check the inside of the crank arm for the model and length.

The next step is to check the power meter's compatibility with your frame; if the space between your crank arm and seat stay fits a 10mm Allen wrench between 5cm and 12cm from the centre of your bottom bracket, this should be compatible.

See guide below:


Still unsure? Contact us here for more information.


  • Accuracy: ± 2%
  • Power meter housing: Low profile design, with robust door interface
  • Tool free battery replacement
  • Battery Life: 200+ hours (coin cell: CR2032)
  • Power range (Watts): 0 to 2500
  • Cadence range (rpm): 20-220
  • Water resistance rating: IPX7
  • Weight: Only adds 20g to base crank arm
  • Active temperature compensation
  • Accelerometer based cadence measurement
  • Wirelessly upgradable firmware

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