power2max NG ROTOR ALDHU 24MM Gravel Power Meter CranksetSeptember 6, 2023
$1,140.00 – $1,240.00
power2max’s premier NG power for bikes with a Shimano GRX crankset!
power2max NG ROTOR ALDHU 24MM Gravel Power Meter Crankset
The power2max NG ROTOR ALDHU 24MM Gravel Power Meter Crankset is the go-to gravel power meter for bikes with a Shimano GRX crankset. Using the same 24MM spindle as your GRX crankset, this power meter will fit your current bottom bracket without any changes. Even better, the power meter gives you a narrow road Q factor vs. the slightly wider Q factor inherent in GRX cranks and allows you to run a 1x or 2x chainring set-up.
The NG is the premier model in the power2max line-up. With features such as dual leg power measurement, ANT+/Bluetooth SMART compatibility and left/right power balance, this power2max gravel crankset comes fully-loaded. In addition, the NG is accurate to +/- 1.0% and is easy to use with features such as auto-zero and accelerometer-based cadence measurement. The power2max NG model also features a rechargeable battery with 150 hours of run time as well as a full 5-year warranty!
NG vs. NGeco
This upgraded NG version has the following features vs. the base model NGeco:
- Better accuracy (+/- 1.0% vs. +/- 2.0%)
- Rechargeable battery
- Longer 5-year warranty
- Additional training metrics including left/right power balance
Key Product Details
This power meter is a direct replacement for your Shimano GRX crankset. It uses a 24 mm spindle and fits Shimano 24 mm bottom brackets. It comes with power2max gravel chainrings and features a GRX 47 mm chainline. The power meter gives you a narrow road Q factor vs. the slightly wider Q factor inherent in GRX cranks. See Compatibility tab for more information.
The power2max power meter measures power at the spider and is therefore able to measure power from both legs. This NG version is also able to measure your left vs. right leg power balance.
Dual-leg power measurement, accurate to +/- 1.0%, 150 hours of battery life, rechargeable battery, left/right power balance, ANT+ and Bluetooth compatibility, auto-zero (automatic calibration), 5-year warranty. See Specs tab for more information.
Advice From Our Staff:
We highly recommend power2max power meters and use them on many of our own bikes. They measure power from both legs, are accurate and very reliable. We believe the price also represents a good value for what you get.
Options For This Power Meter
Chainrings: You can order this power meter in a 1X or 2X chainring configuration.
- 1x chainring sizes are: 38 | 40 | 42 | 44 | 46
- 2x chainring sizes are: 46/30 | 48/31
Crank arms: The ROTOR ALDHU 24 mm crank arms come in the following crank arm lengths:
- 155 mm | 165 mm | 170 mm | 172.5 mm | 175 mm
Please note – this power meter ships with a Black decal. Please let us know if you would like us to include a different color instead (Red, Blue, White, Green).
Other Versions to Consider
NGeco Version: While the NG version you are viewing here features slightly better accuracy, a rechargeable battery, a longer warranty and some additional training metrics, we also sell the more affordable power2max NGeco ROTOR ALDHU 24MM Gravel Power Meter Crankset version.
30 MM Spindle Version: We also sell the power2max NG ROTOR ALDHU 30MM Gravel Power Meter Crankset which uses a 30 mm spindle.
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)
- Apply power2max decal
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.
Drivetrain: Compatible with 11- and 12-speed drivetrains (not compatible with SRAM 12-speed chains).
Tip - If you already have a Shimano crankset on your bike, then this power meter will fit your bottom bracket perfectly as all Shimano cranksets use a 24 mm spindle.
Bottom Bracket: This power meter uses a 24 mm Shimano road spindle and must be used with a 24 mm Shimano bottom bracket.
power2max NG ROTOR ALDHU 24MM Gravel Crankset Specs
|Name||NG ROTOR ALDHU Gravel 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||No (however features Auto Zero)|
|Weight||632 grams (power meter and cranks)|
|Battery Life||150 hours|
|Method of Cadence Measurement||Accelerometer|
|Spindle Size||24 mm|
|Q Factor||147 mm|
In the Box
- power2max power meter
- ROTOR ALDHU crank arms and spindle
- power2max gravel chainrings
- 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: Can I use this power2max Gravel power meter on a Shimano road drivetrain?
- Great question! This power2max Gravel power meter features a GRX 47 mm chainline. This is wider than the 44 mm chainlines used on Shimano road drivetrains such as 105, Ultegra and DURA-ACE. However, the chainline on this gravel crankset can be converted to the narrower 44 mm road chainline by use of a power2max MTB Adapter Plate. The adapter plate is placed between the power meter and the gravel chainring, which moves the chainring closer to the bike and gives you a Shimano road chainline.
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.