Stages Shimano Ultegra R8100 Power Meter

Stages Shimano Ultegra R8100 Power Meter
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. ~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. Options For This Power Meter Crank arm lengths: 160 mm | 165 mm | 170 mm | 172.5 mm | 175 mm Compatibility Crankset:
The Stages Shimano Ultegra R8100 Power Meter is compatible with Shimano R8100 cranksets.
Please note, the power meter can also be installed on other Shimano road cranksets, as long as they use Shimano's Hollowtech II interface. These cranksets can easily be identified by the two opposing pinch bolts that are used to secure the left side crank arm. Please see the image below and contact us if you have any questions on compatibility. Check Frame Clearance:
Crank-arm based power meters like this one attach a sensor on the inside of the left crank arm. On some bikes, there is not enough room between the left crank arm and the chainstay for the sensor to clear the frame. Therefore, you should make sure you have at least 10 mm of clearance between the left crank arm and the chainstay - and that you don't have a bottom bracket mounted rear brake (used on some aero and TT bikes). The important area to measure is right in the middle of the crank arm. Please refer to the image below.
If you find that you have around 7-9 mm of clearance, what many people will do is simply install a 1 or 2 mm bottom bracket spacer (between the left crank arm and the frame), which will give them the clearance they need. 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. 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.