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Magene P505-R110X ROTOR Road Power Meter

Niel Ubod May 23, 2024


Accurate, affordable, dual-sided power for your ROTOR 24 mm or 30 mm road crankset!

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Magene P505-R110X ROTOR Road Power Meter

The Magene P505-R110X ROTOR Road Power Meter is a spider-based power meter that is compatible with 24 mm and 30 mm ROTOR cranksets. The Magene measures power from both legs, is +/- 1.0% accurate and features automatic calibration. Weighing only 110 grams and utilizing a rechargeable battery, it is feature rich and allows you to add power to your crankset without changing crank arms or bottom brackets.

The Magene P505 also features a 200 hour ride time, pedal smoothing, IPX7 water and dust proofing, an app for calibration and 2-year manufacturers warranty. It can connect with ANT+ or Bluetooth which allows you to use your favorite indoor training program or app.


Key Product Details


The Magene P505-R110X ROTOR Road Power Meter is compatible with all 24 mm and 30 mm ROTOR ALDHU and VEGAST cranksets. It is also compatible with both 110×4 BCD and 110×5 BCD chainrings. See Compatibility tab for more information.

Power Measurement:

The Magene P505 measures power at the spider and is therefore able to measure power from both legs. It also measures left and right power balance, cadence and pedal smoothing.

Key Features:

Dual-leg power measurement that is accurate to +/- 1.0%, 200 hours of battery life, rechargeable battery, 110 grams, ANT+ and Bluetooth compatibility, auto-zero (automatic calibration). See Specs tab for more information.

Advice From Our Staff:

The Magene ROTOR Power Meter power meter is a great way to add power to ROTOR cranksets. This is a more affordable option that will provide accurate left and right leg power measurements. In addition, since it bolts on to your existing crankset, there is no need to buy new cranks or change bottom brackets.


Cranksets: The Magene P505-R110X ROTOR Road Power Meter is compatible with all 24 mm and 30 mm ROTOR ALDHU and VEGAST cranksets.

Chainrings: The power fits 110 BCD 5-bolt or 110 BCD 4-bolt chainrings. In many cases, you can use your existing chainrings assuming they use the same configuration as the power meter you order.

The 110 BCD 4-Bolt version is compatible with all Shimano 4-bolt chainrings, including Shimano 12-speed chainrings.

Magene ROTOR Road Specs

NameMagene P505 ROTOR Road
Bike TypeRoad
Location of Power MeasurementSpider
Left or Both Legs MeasuredBoth
Independent Left/Right MeasurementYes - Power Balance
InstallationMore involved (60 min. estimated)
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.0%
Weight110 grams
Battery TypeRechargeable
Battery Life200 hours
Method of Cadence MeasurementAccelerometer
Warranty2 years

In the Box

  • Magene power meter
  • Charging cable
  • User's manual

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