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ROTOR INspider KAPIC MTB Power Meter Crankset

Josh Matthew September 20, 2021


A ROTOR spider-based MTB crankset on a full carbon KAPIC crankset!

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ROTOR INspider KAPIC MTB Power Meter Crankset

The ROTOR INspider KAPIC MTB 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 MTB cranksets, the 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 Arm Length: 165 mm | 170 mm | 175 mm

Chainring Size: 34T | 36T | 38T

Chainring Shape: Round | Oval

Spacing: Boost | Super Boost

PLEASE NOTE – This listing is for the ROTOR KAPIC Carbon crankset. This power meter crankset can also be purchased with KAPIC, Hawk or Raptor cranks. Please contact us for details.



The INspider is compatible with ROTOR’s complete range of cranksets. For MTB, this includes the KAPIC Carbon, KAPIC, Hawk and Raptor cranks. It can be set-up in a 1x ROTOR 110 BCD 4-bolt chainring.


In the Box

  • ROTOR INspider Power Meter Crankset (spider, cranks, chainring)
  • USB cable for charging
  • User’s manual


ROTOR INspider KAPIC Carbon Crankset Specs

NameROTOR INspider Crankset
Bike TypeMTB
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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