The 3 Best Power Meter Pedals for Road & MTB (2022)

Power Meter Pedals: Favero Assioma DUO power meter pedals mounted on a Cannondale Supersix road bike

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These are the best power meter pedals for road and mountain bikes available on the market compatible with Look or Shimano cleat systems.

I selected them based on discussions with pro-cyclist friends, reading hundreds of customer reviews, and going through tests.

  • The best power meter pedals for road cycling are Favero Assioma UNO as a more budget, single-sided option. If you look for dual-sided pedals, get the Favero Assioma DUO. Both provide an excellent consistency, accuracy, and are affordable.
  • The best power meter pedals for mountain biking are Garmin Rally XC100 (single-sided) or XC200 (dual-sided). These are one of the very few MTB pedal power meters available.
    You learn more about them below.

If you are new to power meter pedals and don’t know what to look for, don’t worry. I will guide you through the options available on the market.

Let’s dive in.

What Are the Best Power Meter Pedals?

The best pedal power meters have an accuracy rate of around ±1%, provide consistent and reliable data, are durable to withstand frequent use, and are lightweight (around 300g – road bike pedals, around 450g – MTB pedals).

To learn more about power meter pedals and their features, you can skip to the buyer’s guide section.

Favero Assioma UNO power meter pedals (left and right pedal)
Favero Assioma UNO

Also available here and on wiggle.co.uk

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Favero Assioma DUO power meter pedals (left and right pedal)
Favero Assioma DUO

Also available here and on wiggle.co.uk

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Garmin Rally XC200 power meter pedals (left and right pedal)
Garmin Rally XC200

Also available at rei.com and wiggle.co.uk

Read More

Skip to the comparison table…

Favero Assioma UNO and DUO (Best Budget and Best Overall)

Favero Assioma UNO power meter pedals (left and right pedal)
Favero Assioma UNO (Best Budget) | Source: powermetercity.com
Favero Assioma DUO power meter pedals (left and right pedal)
Favero Assioma DUO (Best Overall) | Source: powermetercity.com

And here is how they look on a bike:

Favero Assioma DUO pwoer meter pedals mounted on a Cannondale Supersix bike
Favero Assioma DUO power meter pedals mounted on Cannondale SuperSix

Main Features

  • Most popular pedal power meters
  • Highly accurate and consistent
  • Advanced features (L/R balance, pedal smoothness, etc.)
  • Automatic zero-offset (calibration)
  • 2-year warranty

Technical Specification

  • Accuracy: ±1%
  • Weight: 299g (set)
  • Cleat system: Look KEO (or Shimano SPD-SL with DUO-Shi spindles)
  • Claimed battery life: 50h
  • Battery type: Rechargeable
  • Spindle length: 54 mm

Favero Assioma are the most popular pedal power meters on the market. This is because they are highly accurate, reliable, and, more importantly, affordable.

Depending on your budget and needs, you can choose a single-sided option (UNO) or dual-sided (DUO).

I recommend UNO for beginners and people on a tight budget and DUO for advanced riders that can take advantage of the additional data.

Assioma DUO power meter pedals can independently measure your left/right leg balance, pedal smoothness, time seated vs. standing, etc.

Unlike the previous generation of Assioma pedals, the latest one has an auto-zero feature (what is it?). So you don’t have to think about performing it before every ride.

Compared to other road power meter pedals like Garmin Rally, the Favero Assioma power meter has much shorter battery life. Luckily, the battery is rechargeable.

Keep in mind that Favero Assioma pedals are designed for the Look KEO cleat system. So if you want Favero Assioma pedals for Shimano, you have to use Favero Assioma DUO-Shi spindles.

Also available here and on wiggle.co.uk

Also available here and on wiggle.co.uk


Garmin Rally XC100 and XC200 (Best Power Meter Pedals for MTB)

Garmin Rally XC100 power meter pedal (left pedal)
Garmin Rally XC100 | Source: powermetercity.com
Garmin Rally XC200 power meter pedals (left and right pedal)
Garmin Rally XC200 | Source: powermetercity.com

Main Features

  • Highly durable
  • Advanced features (L/R balance, pedal smoothness, etc.)
  • Spindle is compatible with multiple conversion kits
  • Available in a single-sided or dual-sided options
  • 2-year warranty

Technical Specification

  • Accuracy: ±1%
  • Weight: 444g (set)
  • Cleat system: Shimano SPD
  • Claimed battery life: 120h
  • Battery type: LR44/SR44 (4×) or CR1/3N (2×)
  • Spindle length: 53 mm

If you are a mountain biker or a gravel enthusiast looking for SPD-compatible power meter pedals, you don’t have as many options as road cyclists.

Garmin introduced a series of new power meter pedals in 2021 that includes XC100 (single-sided) and XC200 (dual-sided).

The single-sided option is ideal for beginners on a tight budget. On the other hand, data geeks and demanding riders will appreciate the dual-sided option.

Both pedals are compatible with the Shimano SPD cleats system, which is the most popular among cross country riders and many riders use it on their gravel bikes.

One of the biggest Rally’s advantages is the spindle transferability. You can use conversion kits to use this power meter on your road bike with SPD-SL cleats or LOOK KEO, for example.

This way, you save money on power meters and get consistent data across multiple bikes.

Rally XC100 and XC200 are also durable to withstand the elements like water, mud, dirt, etc. They also handle accidental rock impacts but don’t forget they still include sensitive electronics. So super-harsh conditions are not recommended.

One of the most significant downsides of the Rally line is the absence of an auto-zero feature. Therefore, you should perform zero-offsetting before each ride.


Garmin Rally (RS100, RS200, RK100, RK200)

Garmin Rally RS100 power meter pedal (left pedal)
Garmin Rally RS100 | Source: powermetercity.com
Garmin Rally RS200 power meter pedals (left and right pedal)
Garmin Rally RS200 | Source: powermetercity.com

Main Features

  • Highly accurate and consistent
  • Advanced features (L/R balance, pedal smoothness, etc.)
  • Spindle is compatible with multiple conversion kits
  • Available in a single-sided or dual-sided options
  • 2-year warranty

Technical Specification

  • Accuracy: ±1%
  • Weight: 320g (set)
  • Cleat system: LOOK KEO or Shimano SPD-SL
  • Claimed battery life: 120h
  • Battery type: LR44/SR44 (4×) or CR1/3N (2×)
  • Spindle length: 53 mm

Garmin introduced a new line of power meter pedals called ‘Rally’ in 2021. The road cycling pedals include:

  • The RS pedals compatible with the Shimano SPD-SL cleat system
  • The RK pedals compatible with the LOOK KEO cleat system.

The number ‘100’ means the pedals are single-sided, while the ‘200’ are dual-sided.

The Rally line is a successor of the Vector line. Garmin Vectors didn’t have a good reputation due to their battery and reliability issues.

This changed with the Rally line. The first thing to appreciate is the Shimano SPD-SL compatibility (Vectors were compatible with LOOK KEO only).

The second positive thing is the spindle compatibility (also compatible with Garmin Vector 3) and transferability.

This means you can switch the spindle between Shimano SPD-SL, SPD, or LOOK KEO, using a Rally conversion kit if you are into multiple bike disciplines like road, gravel, and MTB.

Naturally, Rally offers the most features you expect from power meter pedals – advanced ride analysis like seated vs. standing, power phase, L/R balance, etc.

Rally’s battery life is much longer than Favero Assioma. However, the battery is not rechargeable.

Unlike Favero Assioma, Rally pedals don’t perform automatic zero offset, so you have to do it manually.

So, is the higher price justifiable? It is for riders who combine multiple disciplines and are already in the Garmin ecosystem.


ProductForCleatsAccuracyL/R MeasurementWeight (set) 
Favero Assioma DUORoadLOOK KEO±1%Dual-sided299gCheck Price
Check Price (wiggle.co.uk)
Favero Assioma UNORoadLOOK KEO±1%Single-sided299gCheck Price
Check Price (wiggle.co.uk)
Favero Assioma DUO-ShiRoadShimano SPD-SL±1%Dual-sided198g (w/o pedal body)Check Price
Check Price (wiggle.co.uk)
Garmin Rally XC100MTBShimano SPD±1%Single-sided455gCheck Price
Check Price (wiggle.co.uk)
Garmin Rally XC200MTBShimano SPD±1%Dual-sided448gCheck Price
Check Price (wiggle.co.uk)
Garmin Rally RS100RoadShimano SPD-SL±1%Single-sided328gCheck Price
Check Price (wiggle.co.uk)
Garmin Rally RS200RoadShimano SPD-SL±1%Dual-sided320gCheck Price
Check Price (wiggle.co.uk)
Garmin Rally RK100RoadLOOK KEO±1%Single-sided334gCheck Price
Check Price (wiggle.co.uk)
Garmin Rally RK200RoadLOOK KEO±1%Dual-sided326gCheck Price
Check Price (wiggle.co.uk)

Summary

When choosing a pedal power meter, think twice about whether you need a dual-sided power meter. It can cost twice as much as a single-sided one, and you may end up with data that you won’t use.

The Favero Assioma UNO are the best power meter pedals for road cycling (also available in a dual-sided option). They are affordable, accurate, and reliable – these are the three main features to expect from a quality power meter.

The Garmin Rally XC100 (single-sided) and XC200 (dual-sided) are the best pedal power meters for MTB and gravel. These SPD-style pedals are durable to withstand the elements and harsh MTB conditions. They will also provide you with accurate and consistent data, and they are compatible with conversion kits for road pedals.

Read the How to Choose Power Meter Pedals section to learn more about the features, benefits, and disadvantages of pedal power meters.


How to Choose Power Meter Pedals?

I focus solely on choosing pedal power meters in this guide. The following table compares different power meter types.

Power Meter TypeProsCons
Pedal• Easily transferable between bikes
• Compatible with almost any bike (assuming you use it with a particular bike type)
• Easy to set up
• Very accurate
• Can measure both legs independently
• Prone to mechanical damage (clipping in, crashes, etc.)
• High added (rotating) weight (assuming you have lighter pedals)
Crank Arm• Low added (rotating) weight
• Very accurate
• More affordable
• Not easily transferable between bikes (unless both bikes use the same cranks)
• Limited components compatibility
• Can't measure both legs independently (unless you use dual-sided crank arm power meters)
Spider• Low added (rotating) weight
• Very accurate
• Reliable
• Limited components compatibility
• Less affordable
• Not easy to set up
Bottom Bracket• Low added (rotating) weight
• Very accurate
• Reliable
• Protected against mechanical damage
• Limited components compatibility
• Complicated installation
• Not easily transferable between bikes
Handlebar• No added (rotating) weight
• Easily transferable between bikes
• Compatible with virtually any bike
• Less accurate
• Require attaching other sensors (speed + cadence) to your bike
• Prone to damage when crashing
• Can't detect cadence
Hub• No added (rotating) weight
• Easily transferable between bikes (assuming the bikes use the same wheels)
• Require replacing your current hubs or buying a whole wheelset
• Can be heavier than your current hubs
Pros & cons of power meter types
Sources: powermetercity.com, GC Performance, discussions with pro cyclists

NOTE: To learn more about other types of pedals, visit my power meter guide.

Now, let’s dive deeper into the features to look for when choosing pedal power meters.

Data Accuracy & Consistency

Pedal power meters are one of the most accurate power meter types. This is because they measure the power closer to the place where the power is generated.

The accuracy rate of pedal power meters is usually ±1%. Other power meter types vary between ±1% and ±3%.

Unless you are hyper-sensitive to data accuracy, you won’t notice the slight differences between pedal power meters in lower power zones.

Check out the following table to see the power deviations of different accuracy rates.

Accuracy250W500W1000W
0.5%248.8-251.3497.5-502.5502.5-1005
1%247.5-252.5495-505990-1010
1.5%246.3-253.8492.5-507.5985-1015
2%245-255490-510980-1020
2.5%243.8-256.3487.5-512.5975-1025
3%242.5-257.5485-515970-1030
Power meter accuracy for specific accuracy rate and power output

Data consistency is more important. It means that a power meter measures consistent data regardless of the used bike, outside temperature, altitude, etc.

Consistent data are the key to effective training. You don’t want a power meter that has high volatility (once it measures 190W, then 210W while you ride at 200W, for example).

Cleats Compatibility

Today’s power meter pedals are primarily compatible with LOOK and Shimano cleats.

Road bike power meter pedals like Favero Assioma DUO and UNO are designed for LOOK KEO cleats. If you want a Shimano SPD-SL-compatible Favero Assioma power meter, you have to buy DUO-Shi Spindles.

An illustration of Shimano SPD-SL cleats float 6°, 2°, 0°
Shimano SPD-SL cleats float
An illustration of Look cleats float 9°, 4.5°, 0°
Look cleats float

Garmin’s Rally line offers more options. The ‘RS‘ pedals are compatible with Shimano SPD-SL cleats, while the ‘RK‘ with LOOK KEO cleats. The mountain bike Rally ‘XC‘ pedals are compatible with the standard Shimano SPD system known from clipless mountain bike pedals.

NOTE: Currently, there are no power meter pedals for the Wahoo Speedplay system. However, it is expected that Wahoo launches its Powrlink Zero power meter pedals soon.

Left/Right Leg Measurement

Pedal power meters can either be:

  1. Single-sided – they measure the left leg only and estimate your overall power output.
  2. Dual-sided – measure power output of both your legs independently.
Left-Right Leg Balance (Giant Power Meter App)
Left-Right leg balance in Giant’s RideLink App

Single-sided power meters have one significant disadvantage. They are not suitable for single-leg drills because they show zero power for the leg where the power sensor isn’t located (usually your right leg).

Getting dual-sided pedal power meters may seem tempting, but you have to keep in mind that dual-sided power meters are more expensive. Furthermore, analyzing the additional data is not as easy as it may seem.

The left/right leg balance is also an exciting topic. If you find out your balance is 52:48 and you don’t experience any pain, for example, you are fine.

But some riders may have the same imbalance and experience left knee pain. If you are one of them, consult with a physiotherapist or a bike fitter.

I also recommend watching the following video from TrainerRoad’s YouTube channel and reading this article on TrainingPeaks.com if you want to learn more about L/R imbalance.

Q Factor, Spindle and Stance Width

When buying power meter pedals, many riders mix up terms like Q factor, spindle width, and stance width. So, what are they, and how do power meter pedals affect them?

The Q factor is defined as follows:

The Q factor is the width between the inside faces of the cranks where the pedals screw in.

The spindle width (also called spindle length) is the distance from the outside of the cranks to the pedal center.

And the last important term is the stance width. It is the width between the centers of the pedals.

An illustration of a spindle width, Q factor, and stance width
Important measurements – spindle width, q-factor, and stance width

Pedal power meters don’t affect your Q factor. They may affect your spindle and stance width.

Pedals with a wider spindle width than your current will cause that your legs will be further apart.

Luckily, most pedal power meters have a spindle width pretty close to standard pedals (around 53mm).

Zero-Offset vs. Calibration

Zero-offset ≠ Calibration

These two terms are often mixed up. So, what is the difference? Josh Matthew from Power Meter City explained them as follows:

Calibration is a one-time process done during manufacturing, while zero-offsetting should be done by the rider before every ride.

Pedal power meters can either have:

  1. Manual zero-offset – done manually by the rider via a power meter app or a head unit.
  2. or Automatic zero-offset – done automatically before every ride.

Naturally, pedal power meters with an automatic zero-offset are more convenient and user-friendly.

Battery Type & Battery Life

Pedal power meters use one of the following two battery types:

  1. Single-use batteries (LR44/SR44, CR1/3N, etc.) – tend to last longer*, but require replacing.
  2. In-built, rechargeable batteries don’t last as long as single-use batteries, but you can recharge them.

*Power Meter City found out that rechargeable batteries lasted only 140 hours, while single-use batteries 230 hours on average.

For example, Favero Assioma pedals use a rechargeable battery and have a claimed battery life of 50hrs. The Garmin Rally pedals use single-use batteries and have a claimed battery life of up to 120hrs.

Weight

Pedal power meters tend to be slightly heavier than standard road bike pedals. Here are a few examples:

  • Favero Assioma Duo: 299g
  • Garmin Rally RS200: 320g
  • Shimano 105 road bike pedals: 276g
  • Shimano Ultegra road bike pedals: 248g
  • LOOK Keo 2 Max Carbon: 250g
  • Time Xpro 10 road bike pedals: 226g

Depending on the pedals you currently use, the added rotating weight may be one of the most significant downsides of pedal power meters.


Brand

There are just a few brands that specialize in pedal power meters.

  1. Favero and their Assioma line belong to the most popular ones thanks to their affordable price, high reliability, and precision.
  2. Garmin launched their first power meter pedal line called Vector. Unfortunately, owners of these pedals often experience battery issues. Luckily for Garmin, they saved their reputation with the launch of the Rally line in 2021.
  3. SRM is one of the most experienced power meter companies. They teamed up with LOOK and introduced EXAKT power meters. They look sleek and have long battery life, but have a complicated setup process and are expensive.

Power Meter Pedals FAQ

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