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
You are viewing the power2max NG. This is power2max’s premium version. It features several upgrades over the NGeco:
- Better accuracy (+/- 1.0% vs. +/- 2.0%)
- Rechargeable battery (vs. coin cell battery)
- Longer 5-year warranty (vs. 2 year warranty)
- Additional training metrics including left/right power balance
Key Product Details
Compatibility:
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.
Power Measurement:
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.
Key Features:
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).
p2m Gravel NG Power Meter Crankset Comparison
| 24 MM Gravel | 30 MM Gravel |
| Price | $1,150 - $1,230 | $1,200 - $1,260 |
| Spindles | 24 mm | 30 mm |
| BCD | 104 4-Bolt | 104 4-Bolt |
| Chainline | Gravel - 47 mm | Gravel - 47 mm |
| Q Factor | 147 mm | 147 mm |
| Chainring Configuration | 1x or 2x | 1x or 2x |
| Chainring Included | Yes | Yes |
| Chainring | Aftermarket (power2max/ROTOR) | Aftermarket (power2max/ROTOR) |
| Chainring Sizes | 38T, 40T, 42T, 44T, 46T, 46/30T, 48/31T | 38T, 40T, 42T, 44T, 46T, 46/30T, 48/31T |
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.
(949) 535-3742
Taylor (verified owner) –
Power meter was easy to install (with some guidance from the splendid customer support folks). Loving the shorter cranks. Shifting seems pretty comparable to the Shimano chainrings.
Only gripe so far (a few dozen hours of riding later) is that I’ve had the power drop out a few times for a short stretch before coming back.
Power Meter City –
Hi Taylor. Thanks for your feedback! We’re glad to hear the installation went smoothly and that you’re enjoying the shorter cranks. If you continue experiencing power dropouts, feel free to reach out power2max’s customer service – they would be happy to troubleshoot and ensure everything is working perfectly for you. Ride safe!