Sigeyi AXO SL ROTOR ALDHU 24MM Gravel Power Meter Crankset

Sigeyi AXO SL ROTOR ALDHU 24MM Gravel Power Meter Crankset

The Sigeyi AXO SL ROTOR ALDHU 24MM Gravel Power Meter Crankset is a smart upgrade for riders running Shimano GRX. It uses the same 24 mm spindle as GRX cranks, so it fits your existing bottom bracket with no changes required. The design delivers a narrower road style Q factor compared to GRX while supporting both 1x and 2x chainring setups for added flexibility.

The AXO SL builds on the previous AXO by cutting weight and adding pedaling smoothness data. It measures power from both legs with accuracy rated at +/- 1.0 percent. A rechargeable battery delivers up to 300 hours of ride time, and auto zero keeps data consistent. Riders also get left and right balance metrics, Bluetooth Smart connectivity and a two-year manufacturer warranty for long term confidence.

Product Details

Key Features of the Sigeyi AXO SL ROTOR ALDHU 24MM Gravel Power Meter Crankset

• Rugged Durability: This power meter uses IP67 sealing, so it handles wet rides without issue.
• Dual-Sided Power Measurement: It measures power data from both legs and the AXO SL can even show power balance metrics between each individual leg. It can also show pedaling smoothness metrics.
• Highly Accurate: Sigeyi is accurate to +/- 1.0%, giving trustworthy training data.
• Long Battery Life: A rechargeable battery gives 300 hours of battery life and a magnetic charging cable keeps things sealed and simple.
• Smart Details: Auto-zero (automatic calibration), active temperature compensation, ANT+ and Bluetooth which makes using the Sigeyi power meter effortless.

Power Measurement

The Sigeyi AXO SL ROTOR MTB Power Meter is a spider-based power meter and is therefore able to measure power from both legs.

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 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.

Considerations

Like all spider-based power meters with this functionality, the AXO SL provides estimated power balance data. While this estimation is highly accurate, it’s not true left-right power balance like the data recorded by dual-sided power meter pedals.

Advice From Our Staff

The Sigeyi AXO SL ROTOR ALDHU 24MM Gravel Power Meter Crankset delivers strong value for riders seeking GRX compatibility. Sigeyi power meters have earned our trust for their accuracy and reliability and remain a staff favorite. Paired with the ROTOR ALDHU 24MM crankset, this system drops straight in to replace a GRX crankset while adding a high-quality power meter.

Options

Chainrings: You can order this power meter in a 1X or 2X chainring configuration.

• 1x chainring sizes are: 38 | 40 | 42 | 44 | 46
• 2x gravel 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

Other Versions to Consider

30 MM Spindle Version: We also sell the Sigeyi AXO SL 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)

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.