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ROTOR ALDHU Carbon Road Crank Arms

Josh Matthew May 24, 2024


One of the lightest, stiffest carbon road crank arms available!

Clear selection

ROTOR ALDHU Carbon Road Crank Arms

Introducing ROTOR’s first ever carbon crankset! The ROTOR ALDHU Carbon Road Crank Arms are crazy light, weighing 100 grams less than the ALDHU aluminum model. In addition, vertical and horizontal stiffness had been increased by 11% and 36%, respectively. The Carbon ALDHU also features the same modular design so you can use it with any ROTOR 1x or 2x DM chainrings. It is also compatible with the ROTOR INspider and power2max ALDHU power meters.


Key Product Details


This crankset uses a 30 mm spindle and can be run with both 1x and 2x chainrings. This is also compatible with 110×4 BCD and 110×5 BCD chainrings. See Compatibility tab for more information.

Standard vs. Offset Axle:

ROTOR manufactures a Standard and Offset axle that are both compatible with this crankset. For most road and gravel bikes, the standard axle provides the correct chainline. For riders using a GRX drivetrain or gravel bikes with a 50c or larger tire clearance, we recommend the Offset axle.

Key Features:

Carbon construction, multiple crank length options, versatile drivetrain options and ROTOR INspider power meter compatible. See Specs tab for more information.

Advice From Our Staff:

This is a great crankset for road and gravel riders looking for an ultralight and stiff carbon crankset. It addition, you can run it in a number of configurations.


Other Versions to Consider

ROTOR ALDHU Aluminum Crankset: The ROTOR ALDHU Road Crankset is made of aluminum so it is slightly heavier but it is also more affordable. In addition, it is available in both 30 mm and 24 mm spindle options, whereas the ROTOR Carbon is 30 mm only.


Power meters and chainrings: This crankset is compatible with the ROTOR INspider Power Meter, power2max ALDHU Power Meter, as well as ROTOR chainrings.

Bottom bracket: These cranks fit 30 mm road bottom brackets.


  • Interface: ROTOR Direct Mount
  • Crank Arm Material: Carbon fiber
  • Spindle Size: 30 mm
  • Crank Arm Weight: 260 grams (172.5 mm - Pair)
  • Spindle Weight: 96 grams (30 mm)

Common Questions and Answers

Question: Does the ROTOR ALDHU Carbon Road Crank Arms come in a 24 mm version?

  • Unfortunately, no. ROTOR only makes the ALDHU Carbon in 30 mm. However, the ROTOR ALDHU Road Crankset comes in both 24 mm and 30 mm.

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