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Sigeyi AXO SRAM 8-Bolt MTB Power Meter

Niel Ubod May 23, 2024
5.00 out of 5 based on 1 customer rating
(1 customer review)


Accurate, affordable, dual-sided power for your SRAM 8-bolt MTB crankset!

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Sigeyi AXO SRAM 8-Bolt MTB Power Meter

The Sigeyi AXO SRAM 8-Bolt MTB Power Meter is a spider-based power meter that is compatible with SRAM 8-bolt MTB cranksets. This Sigeyi power meter measures power from both legs, is accurate to +/- 1.0% and is lightweight at only 83 grams. In addition, it easily bolts up to your existing SRAM crankset. Therefore, there is no need to buy new cranks or replace your bottom bracket.

The power meter also features a rechargeable battery with 300 hours of ride time, auto-zero functionality (so your data is always accurate), left and right leg power balance and a 2-year manufacturers warranty. Of course, you also get Bluetooth SMART. This allows you to use the power meter with your favorite indoor training program or app.


Key Product Details


This Sigeyi fits SRAM direct mount 8-bolt cranksets. Regarding chainrings, it utilizes a 104×4 bolt pattern, which is different than the direct mount chainrings found on many SRAM MTB cranksets. If you don’t already have a 104×4 BCD chainring, you can order one on this page along with the power meter. 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, accurate to +/- 1.0%, 300 hours of battery life, rechargeable battery, very lightweight, left/right power balance, ANT+ and Bluetooth compatibility, auto-zero (automatic calibration). See Specs tab for more information.

Advice From Our Staff:

The Sigeyi AXO SRAM 8-Bolt MTB Power Meter is a great way to add power to SRAM 8-bolt MTB cranksets. This power meter is accurate, affordable and will provide both left and right leg measurement. In addition, since it bolts on to your existing crankset, there is no need to buy new cranks or change bottom brackets. It is also lightweight which makes it a great option for cyclists looking to minimize added weight.


Options For This Power Meter

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

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

The 1X Boost version is most common and is used on bikes that currently have 3 mm offset direct mount chainrings. These bikes usually feature 52 mm chainlines and 148 mm rear hubs.


Other Versions to Consider

Sigeyi SRAM MTB 3-Bolt: We also have the Sigeyi AXO SRAM MTB Power Meter which fits SRAM 3-bolt MTB cranksets. Please contact us if you are not sure which version you need.


Crankset: The Sigeyi SRAM MTB Power Meter fits SRAM direct mount 8-bolt cranksets. This includes the new SRAM Transmission T-Type 8-bolt cranksets. Before purchasing, please confirm that your crankset uses the 8-bolt interface as shown below.

SRAM 8-Bolt Interface on a road crankset

Chainrings: This power meter requires a 104 BCD 4-bolt MTB chainring (which is different than the direct mount chainrings found on many SRAM MTB cranksets). If you don't already have a 4-bolt chainring, you can order one on this page along with the power meter. If you purchase a new chainring, we will bolt it on to your power meter before shipping, which will make installation that much easier when you receive it.

Please note, if you are using this power meter on a SRAM T-Type Transmission drivetrain, we recommend the Wolf Tooth Components 1x 104 BCD MTB Chainring, which is compatible with these drivetrains.

The smallest chainring this power meter will fit is a 30T round or 32T oval chainring.

Sigeyi AXO SRAM 8-Bolt MTB Specs

NameSigeyi SRAM MTB Power Meter
Bike TypeMTB
Location of Power MeasurementSpider
Left or Both Legs MeasuredBoth
Independent Left/Right MeasurementYes - Power Balance
InstallationMore involved (60 min. estimated)
Chainring Configuration1X or 2X
Speeds11- or 12-speed
Chainline SpacingStandard, Boost or Super Boost
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.0%
Active Temperature CompensationNo (however features Auto Zero)
Weight83 grams
Battery TypeRechargeable
Battery Life300 hours
Method of Cadence MeasurementAccelerometer
Warranty2 years

In the Box

  • Sigeyi power meter
  • Charging 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.

  • T25 Torx bit
  • 8 mm Allen key

Common Questions and Answers: 

Question: What other power meter options are compatible with SRAM 8-Bolt interfaces?

1 review for Sigeyi AXO SRAM 8-Bolt MTB Power Meter
  1. Dave S. (verified owner)

    Incredible custom service from Power Meter City. The team helped me find the exact right model for my bike with the right chain ring. The assembled the chain ring prior to shipping. Installation took < 10 minutes once arrived. Thank you!

    • Power Meter City

      Your feedback is greatly appreciated. Thank you for the 5-star review, Dave! Looks like you are enjoying your new Sigeyi’s! Ride safe!

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