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Sigeyi AXO SRAM MTB Power Meter

Niel Ubod July 10, 2024
5.00 out of 5 based on 7 customer ratings
(7 customer reviews)


Accurate, affordable, dual-sided power for your SRAM 3-bolt MTB crankset!

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Sigeyi AXO SRAM MTB Power Meter

The Sigeyi AXO SRAM MTB Power Meter is a spider-based power meter that is compatible with SRAM 3-bolt MTB cranksets. The 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 3-bolt cranksets. Regarding chainrings, it 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 104 BCD 4-bolt chainring, we offer several to choose from. 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 is a great way to add power to SRAM 3-bolt MTB cranksets. It measures power from both legs, is accurate and affordable. 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 8-Bolt: We also have the Sigeyi AXO SRAM 8-Bolt MTB Power Meter which fits SRAM 8-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 3-bolt cranksets. In order for this power meter to fit, you must ensure your SRAM uses this interface. Please see the image below.

SRAM 3-bolt Interface on MTB 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, 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.

Sigeyi AXO SRAM 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 CompensationYes
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: I have a SRAM MTB crankset. Will the Sigeyi SRAM Power Meter fit?

  • The Sigeyi AXO SRAM MTB Power Meter is one of our go to power meters for MTB. In order for it to fit, you need to ensure you have a direct mount SRAM crankset or a modular SRAM crankset. Please see our article for more information: I have a SRAM MTB crankset. What power meter can I use?
7 reviews for Sigeyi AXO SRAM MTB Power Meter
  1. Lou (verified owner)

    Looks very nice and high quality on close inspection. It immediately connected to the Sigeyi Android app. It installed on my SRAM 3 bolt mtb crank perfectly. Power compares to within a few Watts to my Assioma Duo pedals. I don’t see how it could be improved upon or why I’d pay more for some other brand. I put the included black sticker on it to keep it stealth.

    A white Commencal MTB with Sigeyi power meter on a MTB trail.

    • Power Meter City

      Nice ride, Lou! We’re glad you’re enjoying the power meter and the trails. We’re happy to help if you need anything else!

  2. Lauren (verified owner)

    Purchased this power meter to replace my old one that was failing! I have used it on several long rides and races in all conditions and so far, it has worked flawlessly! I love how it isn’t super expensive and also works as advertised!

    • Power Meter City

      Thanks for the review, Lauren. We’re glad you’re enjoying your power meter and are happy to help if you need anything else. Enjoy the ride!

  3. Scott Hammontree

    Only rode it a couple of times but it seems very good. Install was very easy. Power output to Garmin Computer is as expected. Connected very easily. Unless it proves unreliable, I would say it is a great power meter. Get One!

    • Power Meter City

      Awesome! Thank you so much, Scott! We hope you will continue to enjoy your new power meter. Ride safe!

  4. Nick (verified owner)

    I liked the first one so much I got a second for my other mountain bike. Really nice to have to pace myself on long climbs as well as all the other logging data I get from this.

    • Power Meter City

      Thank you for taking the time to share your positive experience with us, Nick! Good luck on your future rides!

  5. Nick (verified owner)

    Really happy with this power meter for my status 160, while not popular with most mtb guys I like to match my training on the peloton when I can’t get out for a ride. Prior to having a power meter I just relied on Strava estimated data, after riding with this I quickly realized why it’s so hard to get the same results training on my Peloton.

    Super awesome experience buying from these guys. I’m a bit of a noob and ordered the wrong combination of parts, rather than just shipping what I ordered I got a phone call to ensure I would receive compatible parts. I really appreciate the extra effort put into making sure I got what I needed to start logging!

    A mountain bike in a bike stand with a Sigeyi AXO power meter installed on a SRAM GX crank.

    • Power Meter City

      Glad you are enjoying your new Sigeyi’s, Nick! Thank you for taking the time to share your positive experience with us!

  6. parker goodwin (verified owner)

    I recently added the Sigeyi SRAM MTB Power Meter to my single-speed mountain bike, and the results have been nothing short of amazing. This power meter has completely transformed my riding experience. Here’s why I believe it deserves a solid 5-star rating:

    Precision and Accuracy: The Sigeyi power meter provides incredibly accurate power readings, making it an essential tool for anyone serious about their training. Whether you’re a professional racer or a dedicated enthusiast, the precision of this device will help you fine-tune your performance.

    Seamless Integration: Installing the power meter on my SRAM-equipped bike was a breeze. It seamlessly integrates with my drivetrain, and it’s practically invisible once installed. It’s as if it was designed to be part of the bike from the start.

    Battery Life: I’ve been amazed at how long the battery lasts on the Sigeyi power meter. I rarely have to worry about recharging it, and the low-power mode is a fantastic feature for extending the life even further.

    Reliability: In all my rides, the power meter has been consistent and reliable. It has endured rough trails, inclement weather, and all the rigors of mountain biking without missing a beat. It’s clear that this is a well-engineered, durable product.

    Data Analysis: The ability to track and analyze my power output has been a game-changer for my training. I can now monitor my progress, identify strengths and weaknesses, and adjust my training accordingly. This power meter has helped me become a smarter, more efficient rider.

    Excellent Customer Support: Sigeyi’s customer support team has been incredibly responsive and helpful, ensuring that any questions or issues I had were promptly addressed.

    In summary, the Sigeyi SRAM MTB Power Meter is a top-notch product that has taken my single-speed mountain biking to a whole new level. It offers precision, durability, and seamless integration, making it a must-have for serious riders who want to improve their performance. I couldn’t be happier with my purchase, and I highly recommend it to anyone looking to elevate their cycling experience. Five stars all the way! ⭐⭐⭐⭐⭐

    • Power Meter City

      We’re overjoyed to read your positive review, Parker! Knowing that our new Sigeyi power meters made a positive impact makes our day! Thank you for choosing Power Meter City! Ride safe!

  7. Jim Messer (verified owner)

    I’ve wanted to add a power meter to my training and finally decided to. I researched Sram’s solution- and I would have had to buy a new crank. That was way out of range. More research brought me to powermetercity and finally, to Sigeyi AXO. It has great reviews, is an amazing price, and appears to be a great meter.

    I ordered a chain ring and ring bolts with my PM. PMC installed them both. I installed it on my YT Izzo and it paired instantly to my Edge 840. I did a number of rides and the readings are super clean.

    This is a great value and you’ve found a great place to order it from.

    Sigeyi AXO SRAM MTB Power Meter on a SRAM XX1 crankset

    • Power Meter City

      You came into the right place, Jim! Thank you for this amazing review! (Our very first one!) We hope you will continue your new Sigeyi power meter and we are here if there is anything else we can do!

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