Stages Shimano XT M8120 Driveside Power MeterAugust 10, 2023
Stages power on a Shimano driveside XT M8120 crank arm
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.
Key Product Details
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.
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).
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
This power meter is compatible with Shimano XT M8100/8120/8130 cranksets.
Stages Shimano XT M8120 Driveside Specs
|Name||Stages XT M8120 Driveside|
|Location of Power Measurement||Crank Arm|
|Left or Both Legs Measured||Right only|
|Independent Left/Right Measurement||No|
|Crank Arm Material||Aluminum|
|Communication Protocol||ANT+ and Bluetooth SMART|
|Claimed Accuracy||+/- 1.5%|
|Automatic Temp. Compensation||Yes|
|Weight||20 grams (added weight)|
|Battery Type||CR2032 coin cell|
|Battery Life||200+ hours|
|Method of Cadence Measurement||Accelerometer|
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?
- You can find the steps to pair your new Stages right side power meter with your current left side power meter here: 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.