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Sigeyi Praxis G2 LYFT MTB Power Meter Crankset

Power Meter City June 13, 2024


Sigeyi AXO power meter + Praxis G2 LYFT carbon cranks!

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Sigeyi Praxis G2 LYFT MTB Power Meter Crankset

The Sigeyi Praxis G2 LYFT MTB Power Meter Crankset combines the Sigeyi AXO MTB power meter with Praxis G2 LYFT carbon crank arms. The result is an accurate and lightweight power meter crankset for XC and trail riders.

The Sigeyi AXO power meter features dual leg power measurement, +/- 1.0% power accuracy and 300 hours of battery life. This power meter also has auto-zero functionality and connects with ANT+ or Bluetooth SMART, allowing you to use your favorite head unit and training platforms.

The Praxis G2 LYFT crank arms are made from carbon and use a 30 mm spindle. They use an aluminum preload adjuster to make set up and installation easy. These are Praxis’ flagship MTB cranks and are made to be both lightweight and durable.


Key Product Details


This Sigeyi power meter crankset is compatible with 104 BCD 4-bolt chainrings and 30 mm bottom brackets. The Sigeyi AXO power meter is made for Boost frames by default, however it can also be purchased in the Standard chaineline configuration. In this case, it comes with an adapter to provide the proper chainline for mountain bikes using Standard spacing. See Compatibility tab for more information.

Power Measurement:

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

Key Features:

Dual-leg power measurement, carbon crank arm construction, accurate to +/- 1.0%, 300 hours of battery life, left/right power balance, ANT+ and Bluetooth compatibility, auto-zero functionality (automatic calibration). See Specs tab for more information.

Advice From Our Staff:

The Sigeyi Praxis MTB power meter crankset is a great choice for riders looking for a carbon MTB crankset for XC and trail riding. This is a lightweight option that is still durable enough to tackle any trail and provides valuable training data at a reasonable price.


Options For This Power Meter

Chainline and BCD: This power meter is available in the following chainline options:

  • 1X Boost | 104 BCD
  • 1X Standard | 104 BCD

Crank arms: This power meter comes with Praxis G2 LYFT crank arms. You have the option of the following crank arm sizes:

  •  165 mm | 170 mm | 175 mm


Professional Assembly (Optional)Sigeyi Build Checklist

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: This power meter requires a 104x4 BCD MTB chainring (which is different than the direct mount chainrings found on many Praxis MTB cranksets). If you don't already have a 4-bolt chainring, we offer several to choose from.

The smallest chainring you can use on a Sigeyi MTB power meter is a 30T round or 32T oval.

Bottom Bracket: This power meter fits 30 mm bottom brackets. If you currently have a 30 mm crankset 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 Praxis G2 LYFT Crankset

NameSigeyi Praxis G2 LYFT Crankset
Bike TypeMTB
Location of Power MeasurementSpider
Left or Both Legs MeasuredBoth
Independent Left/Right MeasurementYes - Power Balance
InstallationMore involved (60 min. estimated)
Chainring Configuration1X
Speeds11- or 12-speed
Chainline SpacingStandard, Boost
Crank Arm MaterialCarbon
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.0%
Active Temperature CompensationNo (however features Auto Zero)
Weight503 grams
Battery TypeRechargeable
Battery Life300 hours
Method of Cadence MeasurementAccelerometer
Spindle Size30 mm
Q Factor177 mm
Praxis G2 LYFT Warranty2 years
Sigeyi Warranty2 years

In the Box

  • Sigeyi AXO power meter
  • Praxis G2 LYFT Cranks and spindle
  • Sigeyi USB Charger 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.

  • 8 mm Allen key

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