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ROTOR INspider Power Meter

The ROTOR INspider Power Meter 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.



Advanced Data Metrics

In addition to power and cadence, the INspider measures pedal smoothness, TORQUE 360, Optimum Chainring Angle and Optimal Chainring Position.

Work on Any Bike

This is the first spider-based power meter to be compatible across all disciplines including road, CX, gravel, MTB and track.

High Degree of Compatibility

The system can be used with multiple crank sizes and lengths including 24 and 30 mm axles and 150 mm to 175 mm crank arm lengths.

Bluetooth SMART Technology

The INspider features dual ANT+ and Bluetooth SMART. This allows you to use the power meter with any cycling computer, smartphone or tablet.

1x and 2x Compatible

The INspider has maximum flexibility and can be set-up in a 1x or 2x chainring configuration using any ROTOR 110 BCD 4-bolt chainring.

Q-Ring Compatible

Using ROTORs OCA (Optimum Chainring Angle), you can adjust your chainrings with maximum precision for optimized pedaling efficiency.


Cranks: The INspider is compatible with any ROTOR crankset that uses its OCP (Optimal Chainring Position) Direct Mount splined interface. This includes the ALDHU and VEGAST cranks for road, CX, gravel and track and the Kapic Carbon, Kapic, Hawk and Raptor cranks for MTB.

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.


In the Box

  • ROTOR INspider Power Meter
  • USB cable for charging
  • User’s manual

ROTOR INspider Power Meter Specs

Name ROTOR INspider Power Meter
Bike Type Road, CX, Gravel, MTB, Track
Location of Power Measurement Spider
Left or Both Legs Measured Both
Independent Left/Right Measurement No
Installation More involved (60 min. estimated)
Communication Protocol ANT+ and Bluetooth SMART
Claimed Accuracy +/- 1.0%
Weight 149 grams
Battery Type Rechargeable Li-ion
Battery Life 200 hours
Method of Cadence Measurement Accelerometer
BCD 110
Q Factor / Chainline Varies Based on Crankset
Warranty 2 years