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ROTOR INspider ALDHU Carbon Road Power Meter Crankset

Power Meter City May 23, 2024


ROTOR spider power meter + carbon crankset!


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ROTOR INspider ALDHU Carbon Road Power Meter Crankset

The ROTOR INspider ALDHU Carbon Road Power Meter Crankset features ROTOR’s spider-based power meter paired with it’s first every carbon crankset! The INspider measures power from both legs, recording data via four sets of opposing gauges. This results in a high degree of accuracy (+/- 1.5%) and also means the power meter can measure left and right leg power balance. In addition, the ALDHU Carbon Crankset is crazy light, weighing only 260 grams. Vertical and horizontal stiffness has also been increased by 11% and 36%, respectively.


Key Product Details


This power meter fits 30 MM road bottom brackets and is compatible with a wide selection of ROTOR chainrings. See Compatibility tab for more information.

Power Measurement:

The ROTOR INspider power meter measures power at the spider and is therefore able to measure power from both legs.

Key Features:

Dual-leg power measurement, accurate to +/- 1.5%, 200 hours of battery life, lightweight carbon crank arms, 1x and 2x compatible, works great with oval chainrings, rechargeable battery, left/right power balance, ANT+ and Bluetooth compatibility. See Specs tab for more information.

Advice From Our Staff:

These are fantastic cranksets. The ROTOR power meter measures power from both legs, is accurate and reliable. The ROTOR carbon crank arms are light, stiff and look great. In addition, you can also run this power meter in a range of configurations (different crank arms, spindle sizes and chainrings) to fit your needs.


Options For This Power Meter

  • Crank Arm Length: 155 mm | 165 mm | 170 mm | 172.5 mm | 175 mm



ROTOR offers several different chainrings that fit this power meter…too many for us to list in the menus above! So on the Checkout Page, just tell us what chainrings to include in your order. No need to add the chainrings you want to your cart – the cost is included with the power meter here! Please view all available ROTOR power meter chainrings.


Other Versions to Consider

Aluminum Version: We also have the ROTOR INspider ALDHU Road Power Meter Crankset which features ROTOR aluminum crank arms. This version is more affordable, but the aluminum crank arms are not quite as nice. An advantage to the aluminum version however is they come in both 24 mm and 30 mm spindle sizes.


Chainrings: The INspider ALDHU Carbon is compatible with a wide selection of ROTOR chainrings. They are designed to work with 9-, 10-, 11-, 12-, and 13-speed groupsets.

Bottom Bracket: This power meter uses a 30 mm spindle and must be used with a 30 mm bottom bracket.

Note - The INspider does not fit Trek bikes that have a T47 bottom bracket.

ROTOR INspider ALDHU Carbon Road Crankset Specs

NameROTOR INspider Carbon Crankset
Bike TypeRoad, CX, Gravel, Track
Location of Power MeasurementSpider
Left or Both Legs MeasuredBoth
Independent Left/Right MeasurementYes - Power Balance
InstallationMore involved (60 min. estimated)
Crank Arm MaterialCarbon
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.5%
Active Temperature CompensationNo
WeightVaries based on configuration
Battery TypeRechargeable
Battery Life200 hours
Method of Cadence MeasurementAccelerometer
BCD110 4-bolt asymmetric
Spindle Size30 mm
Q FactorVaries based on crankset
Warranty2 years

In the Box

  • ROTOR INspider Carbon Power Meter Crankset (spider, cranks and chainrings)
  • USB cable for charging
  • User's manual

ROTOR Aero Crown sold separately.

Tools Needed for Installation

You will need the following tools for installation of this product. You can purchase many of these commonly used tools in our store.

  • 10 mm Allen key

Common Questions and Answers

Question: Does the ROTOR INspider ALDHU Carbon 2x Road Power Meter Crankset come in a 24 mm version?

Question: How do I determine what length my current cranks are so I can make sure I get the same size?

  • Your crank arm length should be printed or stamped on the inside of the left crank arm, usually near the pedal end.

End of crank arm showing crank arm length


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