Sigeyi AXO SRAM 8-Bolt MTB Power MeterDecember 6, 2023
$380.00 – $395.00
Accurate, affordable, dual-sided power for your SRAM 8-bolt MTB crankset!
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.
The Sigeyi power meter measures power at the spider and is therefore able to measure power from both legs.
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.
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
|Name||Sigeyi SRAM MTB Power Meter|
|Location of Power Measurement||Spider|
|Left or Both Legs Measured||Both|
|Independent Left/Right Measurement||Yes - Power Balance|
|Installation||More involved (60 min. estimated)|
|Chainring Configuration||1X or 2X|
|Speeds||11- or 12-speed|
|Chainline Spacing||Standard, Boost or Super Boost|
|Communication Protocol||ANT+ and Bluetooth SMART|
|Claimed Accuracy||+/- 1.0%|
|Active Temperature Compensation||No (however features Auto Zero)|
|Battery Life||300 hours|
|Method of Cadence Measurement||Accelerometer|
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?
- Quarq and SRM also make an 8-bolt MTB power meter spider. Please check out this FAQ page to learn more about the differences between these power meters. Please check out this FAQ page to learn more about the options and differences for SRAM 8-Bolt power meters: SRAM Quarq XX1 vs. SRM SRAM MTB Power Meter vs. Sigeyi AXO SRAM 8-Bolt MTB.