
Stages Shimano Ultegra R8100 Power Meter 175 mm
The Stages Shimano Ultegra R8100 Power Meter combines Shimano’s award-winning Ultegra groupset with Stages Cycling’s proven performance and dependability. The result is an accurate, lightweight, durable power that comes ready to ride on a Shimano R8100 crank arm. Compatible with all Shimano Hollowtech II road cranks, the Stages Ultegra R8100 runs off of a CR2032 battery and features 200 hours of battery life.
In addition, 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 R8100 power meter (Generation 3) 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.
Options
Crank arm lengths: 175 mm
Compatibility
The Stages Shimano Ultegra R8100 Power Meter is compatible with Shimano R8100 cranksets.
Please note, this product requires a Shimano Crankarm Cap Tool (sold by us separately) for installation.
In the Box
- Stages Power Meter
- 2032 coin cell battery
- Quick Start guide
Specs
| Name | Stages Shimano Ultegra R8100 |
| Bike Type | Road |
| Location of Power Measurement | Crank Arm |
| Left or Both Legs Measured | Left only |
| Independent Left/Right Measurement | No |
| Installation | Easier |
| Crank Arm Material | Aluminum |
| Communication Protocol | ANT+ and Bluetooth SMART |
| Claimed Accuracy | +/- 1.5% |
| Automatic Temp. Compensation | Yes |
| Weight | 15 grams (added weight) |
| Battery Type | CR2032 coin cell |
| Battery Life | 200+ hours |
| Method of Cadence Measurement | Accelerometer |
| Warranty | 1 year |
Why Buy from Power Meter City
1. We ship fast! All orders ship on the same day your order is placed!
2. Free shipping on all orders in the U.S.
3. We are an authorized Stages dealer and this product comes with a full warranty.
4. Expert advice and customer service in case you need any help.
5. We offer a free, 30-day return policy on new items.
6. We offer 20% off TrainingPeaks Premium when you buy a power meter.
About our Company
At Power Meter City, we focus on power meters and related accessories and components. Our focus on these products means we can offer you the best possible selection, advice and service.
We have been in business since 2016 and are based in southern California. We are an authorized dealer of every product we sell.

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