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Stages Cycling Gen 3 Ultegra R8100 Single Leg Power Meter
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Stages Cycling
Gen 3 Ultegra R8100 Single Leg Power Meter

Mfg PartNum:
  (1 customer reviews)
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Backorder: This item is currently not in stock but is available to purchase today as a backorder. The expected availability date shown above is our best estimate as to when it will be shipped to you, but this date is subject to change based on our receipt of this item from its vendor. Shipping in the continental US is free for all backorder items (for international orders, our customer service team will contact you when the item is available to ship). Your credit card will not be charged until your item ships (Paypal requires payment up front, but you can cancel for full refund). Anytime prior to shipment, your backorder can be cancelled by contacting our customer service team.

Stages Power Comes To Ultegra 8100

Stages power is now available on Shimano's newest R8100 series groupset. The Stages Cycling Ultegra R8100 Power Meter replaces your current left-side crank arm. Like all Stages power meters, this unit features +/- 1.5% accuracy, 200 hours of battery life, and is lightweight at only 15 grams of added weight. In addition, the power meter is compatible with both ANT+ and Bluetooth SMART devices. This means you can use a bicycle computer with ANT+ or your smartphone or tablet with Bluetooth SMART.

The new 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 Gen 3 also features improved accuracy and has an LED indicator light on the housing for improved ease of use.


  • Stages non-drive side Ultegra 8100 series crank arm-based power meter
  • Left side only
  • Aluminum construction
  • ANT+ and bluetooth SMART compatible
  • Accuracy within +/- 1.5%
  • Automatic temperature compensation
  • CR2032 coin cell battery
  • 200+ hours battery life
  • Accelerometer cadence measurement
  • Available in 160-175mm crankarm length options

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.


Mfg PartNum: U81L-Z 


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Great powermeter
by Blair
Tampa, FL

Excellent product, easy to install, faultless performance

Reviewed 9/26/2022
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