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Stages Cycling
Shimano Ultegra R8000 Single Leg Power Meter

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Backorder: This item is currently out of 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.

— New Lower Pricing on Stages Power Meters —

Stages Power has carried riders to three consecutive Tour de France victories, plus many more world and national championships. If you believe racing provides the world's best product proving ground, then Stages Power is proven as the world's best power meter. Featuring Active Temperature Compensation as standard equipment, Stages believes that consistency of measurement is the most important feature of a power meter. Stages Power was the first meter to make temperature compensation an automatic process ensuring accurate readings regardless of the environmental conditions. Stages Power meters are calibrated individually to ensure a +/- 1.5% accuracy level which means that you can trust the data produced by their system.

Want to learn more about training with Power Measurement? Visit our guide to training with power on TriSports University.

The new Gen 3 single-sided Stages Power meter is built on to a non-drive-side Shimano Ultegra R8000 crank arm and is compatible with all Shimano Hollowtech II road drivetrains.

Features & Specs:

  • A ±1.5 % accuracy in all conditions
  • Active temperature compensation
  • Accelerometer based cadence measurement
  • Wirelessly upgradable firmware
  • LED indicator displays battery level at start up (with no need for connect to an app) and confirms successful zero reset.
  • Updated accelerometer and addition of gyroscope for improved cadence resolution.
  • Upgraded BLE and ANT+ radios offer a 6X improvement of data transmission strength.
  • Low profile housing design with robust door interface.
  • Only adds 15g to base crank arm.
  • Battery Life: 200+ hours (coin cell: CR2032) when used as a single sided meter.
  • Power measurement range from 0 - 5000 Watts
  • Cadence measurement range from 10-220 rpm
  • Water resistance rating: IPX7


  • This Shimano Ultegra R8000 Stages Power meter is compatible with all Shimano Hollowtech II road drivetrains.
  • Device Compatibility: ANT+, Bluetooth Smart Ready
  • Software Compatibility: Stages Link, Training Peaks, Strava, Garmin Training Center and others

Whats in the box:

  • Single, non-drive side crank arm with power meter installed.
  • High quality CR2032 coin cell battery.
  • Lifetime access to Stages Link for power meter management and firmware upgrades.
  • 2 months free access to Stages Link premium training and coaching features.
  • Product Identification Card with Serial Number and ANT+ I.D. Number.
  • User Guide

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: UR8L-A 


Mfg PartNum: UR8L-C 


Mfg PartNum: UR8L-D 


Mfg PartNum: UR8L-E 

Ordered by Most Relevant First
5 stars
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1 stars
Super easy to install, pair, and calibrate
by PSBiker
Cycling Enthusiast
Palm Springs, CA
1 of 1 customers found this review helpful.

My first attempt to add a power meter to my bike was a disaster and I returned it. (PowerPod v3). It was nearly impossible to calibrate the device and I got wildly unreliable readings once I did.

In contrast to the PowerPod, the Stages Power Meter is simple to pair, and periodic calibration is even easier. Obviously installation will require pulling your original left-side crank arm and replacing it with the Stages version. If you don't already have it, you'll need to buy the Shimano dust cap tool (spend a couple extra bucks to get the metal tool vs. the plastic one), but don't be intimidated -- it's a super easy installation process that can be performed in 5 minutes or less.

I'm using the Stages Power Meter in conjunction with a Garmin Edge and Di2. Power readings are reasonable and consistent. If you haven't used a power meter before, it will add an entirely new dimension to your training/fitness regimen. At some point I may add the right side power meter, but for now I feel like I'm getting tremendous value. Highly recommended!

Reviewed 2/26/2021
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Good power meter option
by Leo
Competitive Racer

This power meter is the cheapest option that you can get around the 350 usd, it will work very good in cases when the rider has symmetrical pedaling option if this is your case not looking more.

Reviewed 2/11/2021
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Great and efficient
by Anonymous
Memphis, TN

If you are looking for an efficient, cost effective and easy way to track your power, this is the ticket! Installation and setup was a breeze

Reviewed 3/8/2021
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Easy to set up and easy to use
by Anonymous
Cycling Enthusiast
1 of 1 customers found this review helpful.

Great for amateurs and those looking to work with a training program. I find no reason to spend more money on dual side power meters. This unit is foolproof and just works well. I enjoy it the most when I have a headwind as it reassures me that my efforts are still strong even though my speed is lower.

Reviewed 10/9/2020
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This is the data I needed!
by DBL
Cycling Enthusiast
Denver, CO
1 of 1 customers found this review helpful.

I have wanted a power meter for some time but the prices of all the options just kept me from buying one. The Stages power meter has received excellent reviews and a sudden price drop made this the perfect Father�s Day gift (for me!). It integrates easily with my Wahoo ELEMNT and freed up a cadence sensor for use on another of my bikes. Having the power metric is truly useful on climbs, You can know if you are working too hard before it feels too hard. I think training with power will be effective for me. Also, if you wanted to try indoor training you do not need a smart trainer to get started. A Stages power meter will work with all the popular apps like Zwift and The Sufferfest, you can use a non-smart enabled trainer and still get many of the benefits of these applications. My indoor training options for this winter are improved.

Reviewed 9/10/2020
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Perfect fit, worked like a charm
by et
Cycling Enthusiast
North Shore Boston
2 of 2 customers found this review helpful.

The power meter arm arrived on time, it was an easy fit to my road bike and synced up to my Garmin right away. I've been using it for weeks now and it seems to be working perfectly. Good accuracy and easy installation.

Reviewed 11/17/2020
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Exceptional Value for adding Power measurements to your training.
by John
Cycling Enthusiast
Viera, Florida
1 of 1 customers found this review helpful.

I have been using the Stages Power meter for over 2 months and it has been a great product. Very accurately captures my power outputs to help better manage my training activities. I found it to read very consistent with my Wahoo indoor smart trainer power ratings so very happy with the power integration into the crank arm.

Reviewed 11/5/2020
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Fit and forget
by Anonymous
Portland, OR
2 of 2 customers found this review helpful.

After researching a bunch of options for a single power meter I ended up purchasing the Stages one. Great price point, super easy to install (with the right tools) and flawless communication to my Wahoo. The sensor is mounted really nice on the crank and doesn�t require tons of clearance, it really is �fit and forget�.

Reviewed 10/16/2020
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Affordable solution for power tracking
by dcore
Cycling Enthusiast
1 of 1 customers found this review helpful.

Easy to install, good app for firmware updates. I use it for power and cadence connected to my Garmin Edge 830. I've compared the power readings results to my Tacx Neo2 and find it within a few watts. Good enough for me.

Reviewed 9/23/2020
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Works great
by Chris
Cycling Enthusiast
Palo Alto, CA

Reliably provides power data to my Wahoo Elemnt. Just works. Is it accurate? Who knows? But I've seen no reason to question its accuracy, and it helps encourage me to ride harder and more consistently.

Reviewed 8/13/2020
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Like it so much, I bought another
by just me
Cycling Enthusiast

I've two of these now, one on each of my bikes. Accurate, easy to set-up, and reliable.

Reviewed 10/30/2020
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Stages Single Leg Power Meter
by Santos Cisneros
Lenexa Ks
0 of 1 customers found this review helpful.

Waited a Long Time for Stages Very Good Product and Easy to Install and Reads Good on Garmin 520.

Reviewed 4/23/2020
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