Stages Shimano Ultegra R8100 Dual-Sided Power Meter

Stages Shimano Ultegra R8100 Dual-Sided Power Meter
The Stages Shimano Ultegra R8100 Dual-Sided Power Meter features Stages proven performance and dependability on a Shimano Ultegra R8100 crankset. With a power sensor on both crank arms, this Stages power meter measures power from both legs and also provides L/R power measurement, making it a valuable training tool. In addition, its accurate to 1.5%, features dual ANT+ and Bluetooth SMART compatibility and runs off two CR2032 batteries. The Stages R8100 Dual-Sided Power Meter is extremely lightweight, adding only 35 grams to the crankset. ~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 power meter is compatible with 2×12 road drivetrains and 24 mm Shimano bottom brackets. Most customers that buy it already have a Shimano R8100 crankset on their bike and therefore, it’s an easy swap. However, it can be used on any road bike as long as its 2×12 with a 24 mm bottom bracket. See Compatibility tab for more information.
Power Measurement:
This Stages power meter has a power sensor on both crank arms and measures power from both legs. It is also able to measure your left vs. right leg power.
Key Features:
Dual-leg power measurement, can measure left vs. right leg power, accurate to within +/- 1.5%, lightweight at only 35 grams of added weight, 200+ hours of battery life, CR2032 user-replaceable battery, ANT+ and Bluetooth compatible. See Specs tab for more information.
Advice From Our Staff:
This is a great option for customers with a Shimano R8100 drivetrain that want to keep an OEM R8100 crankset on their bike but add power. We also like that fact that this crankset measures power from both legs and as well as provides left vs. right leg power. Options For This Power Meter Chainrings:

 50/34 | 52/36

Crank arm lengths:

 160 mm | 165 mm | 170 mm | 172.5 mm | 175 mm

Compatibility Bottom Bracket:
This power meter is compatible with 2x12 road drivetrains and 24 mm Shimano bottom brackets. Most customers that buy it already have a Shimano R8100 crankset on their bike and therefore, it's an easy swap. However, it can be used on any road bike as long as its 2x12 with a 24 mm bottom bracket. 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. In The Box

Stages Crankset Power Meter

2 2032 coin cell batteries

Lifetime access to Stages Link for power meter management and firmware upgrade

2 months free access to Stages Link premium training and coaching features

User 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.