Sigeyi AXO SL ROTOR ALDHU Carbon Road Power Meter Crankset

Sigeyi AXO SL ROTOR ALDHU Carbon Road Power Meter Crankset

The Sigeyi AXO SL ROTOR ALDHU Carbon Road Power Meter Crankset pairs the Sigeyi AXO SL spider with ROTOR’s ultralight ALDHU Carbon crank arms. This setup measures power from both legs, delivers ±1.0% accuracy and keeps weight low. You also get a rechargeable battery with up to 300 hours of ride time, auto-zero calibration and left-right balance metrics.

This crankset features ROTOR’s first carbon crank arms. The ALDHU Carbon arms drop roughly 100 grams compared to the aluminum version. They also boost stiffness, increasing vertical stiffness by 11% and horizontal stiffness by 36%.

Sigeyi AXO SL vs AXO Differences

This new AXO SL is the latest power meter from Sigeyi.

• New Pedal Smoothness Feature: The SL can provide pedal smoothness metrics, helping riders even out their pedal stroke.
• Reduced Weight: This new version is incredibly lightweight, dropping the mass of the power meter spider from 105 grams to 80 grams.
• Improved Stiffness: Despite the reduced weight, the AXO SL is 8% stiffer laterally and 10% stiffer torsionally. This means power transfer to the bike is improved.
• Reduced Volume: Engineers reduced the spider’s total volume by 35% and added a larger rear opening to improve T47 bottom bracket compatibility. In addition the front surface is now flat, allowing for use of covers to complete an OEM look.

The features that made the AXO such a great power meter spider have been kept, such as +/- 1.0% accuracy, auto-zero calibration, active temperature compensation and more.

Product Details

Key Features of the Sigeyi AXO SL ROTOR ALDHU Carbon Road Power Meter Crankset

• Lightweight and Stiff: The new AXO SL brings the weight of the power meter spider down to 80 grams, and when paired with the ROTOR ALDHU Carbon you get a nice light and stiff power meter crankset.
• 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: The 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 makes using the Sigeyi power meter effortless.

Power Measurement

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

Compatibility

This power meter fits 30 MM bottom brackets and 110 BCD 4-bolt chainrings. This includes all Shimano 4-bolt road chainrings, including Shimano 12-speed chainrings. See the 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 stays highly accurate, it doesn’t provide true left-right power balance like dual-sided power meter pedals record.

Advice From Our Staff

This is Sigeyi AXO SL ROTOR ALDHU Carbon Road Power Meter Crankset is a more expensive power meter with the carbon crank arms, however at $995 you get dual-sided power and very lightweight and stiff carbon fiber crank arms. When compared to similar power meter cranksets, it’s a pretty nice value. If it fits your budget, this crankset is an outstanding choice for performance-focused riders. It delivers pro-level data, top-tier construction all in a lightweight package.

Sigeyi Road Power Meter Crankset Comparison

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.