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XCADEY XPOWER-S GEN2 Praxis DOON Carbon Road Power Meter Crankset

Niel Ubod June 18, 2024


XCADEY XPOWER-S GEN2 power meter with Praxis DOON carbon crank arms

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XCADEY XPOWER-S GEN2 Praxis DOON Carbon Road Power Meter Crankset

The XCADEY XPOWER-S GEN2 Praxis DOON Carbon Road Power Meter Crankset combines the XCADEY XPOWER-S power meter with Praxis DOON carbon cranks. This XCADEY power meter is the second generation XPOWER-S and measures power from both legs. It is also accurate to +/- 1.0% and is lightweight at only 110 grams. It features a rechargeable battery with 150 hours of ride time, active temperature compensation and left and right leg power balance.

The Praxis DOON carbon crank arms are lightweight at only 342 grams (172.5 mm) and use a 30 mm spindle. This makes them compatible with a range of bottom brackets. The DOON cranks also have an updated preload collar which ensures reliability and easy adjustment.


Key Product Details


This power meter fits 30 mm bottom brackets. Regarding chainrings, this crankset works with 110 BCD 5-bolt hidden bolt chainrings. Some chainrings have moveable chain-drop catch pins which allows for the catch pin to be moved into the appropriate position and will make the chainrings compatible. See Compatibility tab for more information.

Power Measurement:

The XCADEY 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 arms, accurate to +/- 1.0%, 150 hours of battery life, rechargeable battery, very lightweight, left/right power balance, ANT+ and Bluetooth compatibility, active temperature compensation. See Specs tab for more information.

Advice From Our Staff:

The XCADEY XPOWER-S GEN2 Praxis DOON Carbon Road Power Meter Crankset is perfect for riders looking for an affordable and lightweight crankset. The XPOWER-S GEN2 power meter provides most modern features, but we note that it does not have automatic calibration. That being said, this crankset offers road cyclists a great value for a power meter crankset.


Options For This Power Meter

Crank arms: The Praxis DOON carbon crank arms come in the following sizes:

  • 165 mm | 170 mm | 172.5 mm | 175 mm


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.


Cranksets: The XCADEY Praxis DOON Carbon Road Power Meter is compatible with SRAM S-900, Force 1, Force 22, Rival 1, Rival 22 and CX1 cranks with a 3-bolt interface. This power meter does NOT fit Cane Creek eeWing cranks.

Chainrings: This power meter is compatible with 110 BCD 5-bolt hidden bolt chainrings. With a hidden bolt chainring, the chain catch pin is aligned with a chainring bolt (please see image below). Many chainrings have a moveable catch pin, which allows you to move the catch pin into the correct position. If your current chainring is not compatible, we recommend the Praxis Works Buzz Road Chainring which has a movable catch pin and is compatible with this XCADEY power meter.A Hidden Bolt Chainring Diagram that shows two chainrings and different catch pin placements

Bottom Bracket: This power meter crankset fits 30 mm bottom brackets. If you currently have a crankset that uses a 30 mm spindle, 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.

What is BCD?: BCD (bolt circle diameter) is simply the diameter of a circle that passes through the centers of the bolt holes in your chainring. The BCD is usually stamped right on the chainring as either 110 or 130. It is important to know what BCD your crankset is because assuming you want to use your existing chainrings on your new power meter, you need to order the correct BCD.

Image of a chainring explaining the concept of BCD

XCADEY Praxis DOON Crankset Specs

NameXCADEY Praxis DOON Crankset
Bike TypeRoad
Location of Power MeasurementSpider
Left or Both Legs MeasuredBoth
Independent Left/Right MeasurementYes - Power Balance
InstallationMore involved (60 min. estimated)
Crank Arm MaterialCarbon Fiber
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.0%
Active Temperature CompensationYes
Weight452 grams (172.5 mm)
Battery TypeRechargeable
Battery Life150 hours
Method of Cadence MeasurementAccelerometer
BCD110 5-bolt
Spindle Size30 mm
Q Factor147 mm
Praxis Warranty2 years
XCADEY Warranty2 years

In the Box

  • XCADEY power meter
  • Praxis DOON carbon crank arms and spindle
  • 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.

  • 8 mm Allen key

Common Questions and Answers

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.

End of crank arm showing crank arm length


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