Sigeyi ROTOR ALDHU Road Power Meter CranksetSeptember 21, 2023
$590.00 – $610.00
Dual-sided power on a ROTOR 24 or 30 MM ALDHU road crankset!
Sigeyi ROTOR ALDHU Road Power Meter Crankset
The Sigeyi ROTOR ALDHU Road Power Meter Crankset combines the Sigeyi spider with an ALDHU crankset. This Sigeyi crankset measures power from both legs, is accurate to +/- 1.0% and is lightweight. The power meter also features a rechargeable battery with 300 hours of ride time, auto-zero functionality, and left and right leg power balance.
If you currently have a Shimano road crankset on your bike, this power meter is a direct replacement. This means it will fit your current Shimano bottom bracket and you can also use your current Shimano chainrings on it. This makes installation and set-up very easy.
Key Product Details
This power meter fits 24 MM or 30 MM bottom brackets and 110 BCD 5-bolt or 110 BCD 4-bolt chainrings based on the version ordered. See Compatibility tab for more information.
For Shimano Users:
If you currently have a Shimano road crankset on your bike, this power meter is a direct replacement. If you select one of the 24MM ALDHU crank sizes, it will come with the same spindle size as your current Shimano crankset and will fit your bottom bracket without any changes. In addition, if you select the 110 4-Bolt BCD option, you can also use your current Shimano chainrings on it. This makes replacing your Shimano crankset very simple and easy.
The Sigeyi power meter measures power at the spider and is therefore able to measure power from both legs.
Dual-leg power measurement, accurate to +/- 1.0%, 300 hours of battery life, rechargeable battery, very lightweight, left/right power balance, ANT+ and Bluetooth compatibility, auto-zero (automatic calibration). See Specs tab for more information.
Advice From Our Staff:
This is one of our best-selling road power meter cranksets. It comes in 24 or 30 mm spindle sizes so it will fit any bike and you can run virtually any chainring size on it as well. The power meter measures power from both legs, is accurate and lightweight. It is also one of the most affordable dual-sided power meter cranksets you can buy.
Options For This Power Meter
BCD: This power meter is available in the following BCDs in order to fit your choice of chainring sizes:
- 110 5-Bolt | 110 4-Bolt
Crank arms: You have the option of either ROTOR ALDHU 24 mm crank arms (uses a 24 mm spindle) or ALHDU 30 mm crank arms (uses a 30 mm spindle). Each of these cranks comes in a wide range of crank arm lengths.
Professional Assembly (Optional)
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.
Chainrings: The power fits 110 BCD 5-bolt or 110 BCD 4-bolt chainrings based on the version ordered. 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.
Bottom Bracket: This power meter fits 24 MM or 30 MM bottom brackets, depending on the version ordered. If you are ordering the same size as you currently have 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.
Sigeyi ROTOR ALDHU Crankset Specs
|Name||Sigeyi ROTOR ALDHU Crankset|
|Location of Power Measurement||Spider|
|Left or Both Legs Measured||Both|
|Independent Left/Right Measurement||Yes - Power Balance|
|Installation||More involved (60 min. estimated)|
|Crank Arm Material||Aluminum|
|Communication Protocol||ANT+ and Bluetooth SMART|
|Claimed Accuracy||+/- 1.0%|
|Active Temperature Compensation||Yes|
|Weight with 24 MM Cranks||609 grams (172.5 mm)|
|Weight with 30 MM Cranks||570 grams (172.5 mm)|
|Battery Life||300 hours|
|Method of Cadence Measurement||Accelerometer|
|BCD||110 5-bolt or 110 4-bolt|
|Spindle Size||24 mm or 30 mm|
|Q Factor||147.5 mm|
In the Box
- Sigeyi power meter
- ROTOR ALDHU crank arms and spindle
- Charging cable
- User's manual
- Decals: Black, Red, Green, Silver, Blue
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: Is the Sigeyi 4-bolt version compatible with Shimano 12-speed chainrings?
- Yes, you can install Shimano 12-speed chainrings on this power meter.
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.