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Stages Shimano XT M8120 Driveside Power Meter

Power Meter City May 23, 2024

Original price was: $494.99.Current price is: $420.99.

Save: 15%

Stages power on a Shimano driveside XT M8120 crank arm

Please see our note below on Stages Rider Support

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Stages Shimano XT M8120 Driveside Power Meter

If you currently have a Stages Shimano XT M8120 left side crank arm, this Stages Shimano XT M8120 Driveside Power Meter allows you to upgrade to a dual-sided power meter. With power sensors on both the left and right crank arms, you can measure and record total as well as independent left power.

Also, some bike frames cannot fit a left side crank arm-based power meter due to clearance issues with the chainstay. In these situations, this Stages driveside power meter is a perfect solution! It allows you to quickly and easily add power to the right side of your crankset where clearance and compatibility issues don’t exist.

The power meter is extremely lightweight – adding only 15 grams to the weight of the crank arm. All Stages power meters are compatible with both ANT+ and Bluetooth SMART devices, which means you can use your favorite bicycle computer as well as a smartphone or tablet.

The Stages Generation 3 power meter features radio antennas that are 6x more powerful than the previous version. This means better compatibility with both bike computers and watches. The new versions also feature improved accuracy (+/- 1.5%) and have an LED indicator light on the housing for improved ease of use.

 

~Stages Rider Support~

It has come to our attention that Stages no longer has the resources to offer product support or warranty services. That said, if purchasing a Stages product, we do our best to answer product or troubleshooting-related questions. Knowing this, please shop Stages products assuming there may not be any future manufacturer support. Please note that Power Meter City cannot facilitate any warranty services.

 

Key Product Details

Compatibility:

This Stages power meter is compatible with XT M8100/8120/8130 cranksets. It is also compatible with all other Shimano x100/x120/x130 series MTB cranksets such as the XTR M9100/M9120/M9130 or the SLX M7100/7120/7130. See Compatibility tab for more information.

Power Measurement:

This Stages power meter measures right leg power and doubles the value to account for both legs (assumes both legs are generating the same force).

Key Features:

Affordable, accurate to within +/- 1.5%, lightweight at only 20 grams of added weight, 200+ hours of battery life, CR2032 user-replaceable battery, ANT+ and Bluetooth compatible, easy to install. See Specs tab for more information.

Advice From Our Staff:

This right side power meter is a great option for those with a Stages XT M8100/8120 Left Side Power Meter that want to upgrade to a dual-sided crankset. It’s also a perfect option if your frame doesn’t allow you to install a left side crank arm.

 

Options For This Power Meter

Crank arm lengths: This power meter is available in the following crank arm lengths:

  • 170 mm | 175 mm

Compatibility

This power meter is compatible with Shimano XT M8100/8120/8130 cranksets.

Stages Shimano XT M8120 Driveside Specs

NameStages XT M8120 Driveside
Bike TypeMTB
Location of Power MeasurementCrank Arm
Left or Both Legs MeasuredRight only
Independent Left/Right MeasurementNo
InstallationEasier
Crank Arm MaterialAluminum
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.5%
Automatic Temp. CompensationYes
Weight20 grams (added weight)
Battery TypeCR2032 coin cell
Battery Life200+ hours
Method of Cadence MeasurementAccelerometer
Warranty1 year

In the Box

  • Stages Right Side Power Meter
  • Shimano 32T chainring
  • 2032 coin cell battery
  • Quick Start guide

Left crank arm not included.

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.

  • Shimano Crank Arm Cap Tool
  • 5 mm Allen key
  • Shimano Direct Mount Lock Ring Tool (if changing chainrings)

Common Questions and Answers

Question: Does this power meter come with a left crank arm too?

  • No, this power meter is a Stages right side crank arm only. Assuming you currently have a Shimano XT M8120 crankset on your bike, you swap out your right side crank arm for this power equipped version, and you keep your current left side crank arm on the bike.

Question: How do I pair my new Stages right side power meter with my current left side?

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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