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Magene ROTOR ALDHU Carbon Road Power Meter Crankset

Power Meter City May 23, 2024

$750.00$770.00

Magene power meter + ROTOR ALDHU Carbon crank arms!

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Magene ROTOR ALDHU Carbon Road Power Meter Crankset

The Magene ROTOR ALDHU Carbon Road Power Meter Crankset combines the Magene P505 power meter with ROTOR ALDHU carbon arms to make a lightweight road power meter crankset. The Magene power meter measures power from both legs, is accurate to +/- 1.0% and uses a rechargeable battery with 200 hours of ride time. This power meter also features automatic calibration, and left and right leg power balance.

This power meter crankset uses ROTOR’s ALDHU Carbon crank arms. These crank arms are very lightweight, weighing 100 grams less than the ALDHU aluminum model. In addition, vertical and horizontal stiffness have been increased by 11% and 36%. This means these cranks have some of the best weight to stiffness ratio available. Additionally, the ALDHU Carbon crank arms come in a variety of crank lengths, allowing riders to match their perfect fit.

 

Key Product Details

Compatibility:

This power meter crankset fits 30 mm bottom brackets and both 110×4 BCD and 110×5 BCD chainrings. See Compatibility tab for more information.

Power Measurement:

The Magene P505 power meter measures power at the spider and is therefore able to measure power from both legs.

Key Features:

Dual-leg power measurement power measurement, carbon crank arms, accurate to +/- 1.0%, 200 hours of battery life, rechargeable battery, left/right power balance, ANT+ and Bluetooth compatibility, automatic calibration. See Specs tab for more information.

Advice From Our Staff:

This is a lightweight power meter crankset that uses and affordable, spider-based power meter with carbon crank arms to provide a balance of value and performance. We recommend this power meter crankset to riders who are looking to buy an affordable, accurate, lightweight, dual-sided power meter with carbon crank arms.

 

Options For This Power Meter

Crank arms: The ROTOR ALHDU Carbon arms use a 30 mm spindle and are available in the following sizes:

  • 155 mm | 165 mm | 170 mm | 172.5 mm | 175 mm

 

Professional Assembly (Optional) Magene Build Checklist

We are happy to professionally assemble your power meter crankset if you select this option when ordering. This ensures your crankset is correctly built and saves you time. Professional assembly includes:

  • Mount the power meter to the cranks and tighten to factory specifications
  • Apply multi-purpose bicycle grease where necessary
  • Install chainrings on the power meter (if chainrings are ordered)

Please note – while we tighten everything to factory specs, it is still your responsibility to routinely check your power meter crankset to make sure all bolts and nuts remain securely fastened.

 

Other Versions to Consider

Magene ROTOR ALDHU Aluminum Crankset: If you are looking for a more affordable or power meter crankset that uses aluminum crank arms, consider the Magene ROTOR ALDHU Road Power Meter Crankset. This crankset still uses the Magene P505 power meter, but is paired with ROTOR ALDHU aluminum crank arms. The aluminum arms are a bit heavier, but offer more durability than carbon crank arms. In addition, they come in both 24 mm and 30 mm spindle sizes.

Compatibility

Chainrings: The power fits both 110x4 BCD and 110x5 BCD chainrings. In many cases, you can use your existing chainrings assuming they use the same configuration as the power meter you order.

The 110 BCD 4-Bolt version is compatible with all Shimano 4-bolt chainrings, including Shimano 12-speed chainrings.

What is BCD?: BCD (bolt circle diameter) is simply the diameter of a circle that passes through the centers of the bolt holes in your chainring. The BCD is usually stamped right on the chainring as either 110 or 130. It is important to know what BCD your crankset is because assuming you want to use your existing chainrings on your new power meter, you need to order the correct BCD.

Image of a chainring explaining the concept of BCD

Bottom Bracket: This power meter fits 30 mm bottom brackets. If you currently have a 30 mm crankset on your bike, you should be able to re-use your existing bottom bracket. However, if you are changing spindle sizes, you will need to replace your bottom bracket.

Magene ALDHU Carbon Crankset Specs

NameMagene ROTOR ALDHU Carbon
Bike TypeRoad
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+/- 1.0%
Active Temperature CompensationYes
Weight466 grams
Battery TypeRecharegable
Battery Life200 hours
Method of Cadence MeasurementAccelerometer
BCD110 5-bolt or 110 4-bolt
Spindle Size30 mm
Q Factor147 mm
ROTOR Warranty5 years
Magene Warranty2 years

In the Box

  • Magene power meter
  • ROTOR ALDHU Carbon crank arms and spindle
  • Charging cable
  • User's manual

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: What is the difference between Magene and other spider-spider based power meters that are compatible with ROTOR ALDHU carbon crank arms?

Question: Magene offers a few different power meter cranksets, what are the differences?

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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