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ROTOR INspider Power Meter Crankset

Josh Matthew October 14, 2019


ROTOR spider-based power featuring the new ALDHU crankset!


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ROTOR INspider Power Meter Crankset

The ROTOR INspider Power Meter Crankset is the first of its kind – a spider-based power meter that can be used on virtually any bike! Compatible with any of ROTOR’s newer direct mount cranksets, the INspider can be used on your road, CX, gravel, MTB or track bike. In addition, ROTOR cranks come in all shapes and sizes – 24 and 30 mm spindles and crank arms from 150 to 175 mm. This allows to you run the crankset that fits both your bike and your style. You can even set up the INspider in a 1x or 2x chainring configuration using any ROTOR 110 BCD 4-bolt chainring.

The ROTOR INspider records data via four sets of opposing gauges. This results in a high degree of accuracy (+/- 1.0%) and also means the power meter can measure left and right leg power balance. The INspider also features ANT+ and Bluetooth SMART and has a USB-rechargeable battery with 200-hour battery life.



Crank arms: You have the option of either ROTOR ALDHU 24 mm crank arms (uses a 24 mm spindle) or ALHDU 30 mm crank arms (uses a 30 mm spindle). In addition, each of these cranks comes in a wide range of crank arm lengths.



Chainrings: The INspider can be set-up in a 1x or 2x chainring configuration using any ROTOR 110 BCD 4-bolt chainring. Please note, the smallest MTB chainring that will fit is a 34T. Chainrings sold separately.


In the Box

  • ROTOR INspider Power Meter
  • ROTOR ALDHU Crank arms
  • USB cable for charging
  • User’s manual
  • Chainrings sold separately


ROTOR INspider Crankset Specs

NameROTOR INspider Crankset
Bike TypeRoad, CX, Gravel, MTB, Track
Location of Power MeasurementSpider
Left or Both Legs MeasuredBoth
Independent Left/Right MeasurementNo
InstallationMore involved (60 min. estimated)
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.0%
Battery TypeRechargeable Li-ion
Battery Life200 hours
Method of Cadence MeasurementAccelerometer
Q Factor / ChainlineVaries Based on Crankset
Warranty2 years




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