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Sigeyi 5DEV MTB Power Meter Crankset

Power Meter City July 12, 2024


Sigeyi AXO power meter + 5DEV R-SPEC Trail crank arms

You save 10% when purchasing the power meter and cranks together!

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Sigeyi 5DEV MTB Power Meter Crankset

The Sigeyi 5DEV MTB Power Meter Crankset combines the Sigeyi AXO MTB power meter with 5DEV R-SPEC Trail crank arms to make a trail and enduro focused power meter crankset with the latest MTB crankset technology. Designed to take on any trail, the Sigeyi AXO power meter is a lightweight spider-based power meter that pairs well with the durable and stiff 5DEV R-Spec Trail crank arms.

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. Therefore, you can use it with your favorite head unit and training platforms.

5DEV R-SPEC Trail crank arms are machined from space-grade 7050 billet aluminum to provide extra stiffness and durability. Made to be compatible and customizable for many riders, this crankset is available in both DUB and 30 mm spindle diameters with crank lengths as short as 155 mm.


Key Product Details


This Sigeyi power meter crankset is compatible with 104×4 BCD chainrings and both DUB and 30 mm bottom brackets, depending on the spindle selected. This crankset uses Boost spacing, making it only compatible with mountain bikes that also use this rear hub spacing. See Compatibility tab for more information.

Power Measurement:

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

Key Features:

Dual-leg power measurement, 7050 space-grade billet aluminum crank arms, 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:

Our staff recommends the Sigeyi 5DEV MTB Power Meter Crankset to riders looking to add a stiff, durable and stylish power meter crankset to their mountain bike. The Sigeyi power meter spider is very accurate, while the 5DEV R-Spec Trail crank arms are designed to withstand the toughest trails.


Options For This Power Meter

Crank arms: This power meter comes with 5DEV R-SPEC Trail crank arms. You have the option of the following crank arm sizes:

  •  155 mm | 160 mm | 165 mm | 170 mm

Spindle diameter: This crankset is available in the following spindle diameters:

  • DUB | 30 mm

Colors: The 5DEV R-SPEC Trail crank arms are available in the following colors:

  • Raw | Black


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.


Other Versions to Consider

Sigeyi Race Face Next SL Crankset: If you are looking for a MTB power meter crankset at a lighter weight, we recommend the Sigeyi Race Face Next SL MTB Power Meter Crankset. This crankset uses a Sigeyi AXO power meter with Race Face Next SL carbon cranks. This makes for an extremely light power meter crankset.


Chainrings: This power meter requires a 104x4 BCD MTB chainring. 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.

If you purchase a new chainring with your power meter, we will bolt it on to your power meter before shipping, which will make installation that much easier when you get it.

Bottom Bracket: This power meter is compatible with DUB and 30 MM bottom brackets, depending on the spindle selected. If you currently have a DUB or 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.

Spacing: This crankset is only available with a Boost spindle. Please make sure your mountain bike uses the same spacing for this power meter crankset to be compatible.



Sigeyi 5DEV MTB Crankset Specs

NameSigeyi 5DEV MTB Specs
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 SpacingBoost
Crank Arm MaterialAluminum
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.0%
Active Temperature CompensationNo (however features Auto Zero)
Weight727 grams
Battery TypeRechargeable
Battery Life300 hours
Method of Cadence MeasurementAccelerometer
Q Factor167 mm
5DEV Warranty5 years
Sigeyi Warranty2 years

In the Box

  • Sigeyi AXO power meter
  • 5DEV R-SPEC crank arms 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
  • 2.5 mm Allen key

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