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Test/Review: The new Favero Assioma Powermeter

After the great success of the bePRO powermeter, the announcement of the new Assioma pedal powermeter from Favero has directly triggered a great response. We have received many enquiries about the product from day one. The first information about the new Favero Assioma sounded very good. Especially the fact that the assembly is now kept much simpler. No special tools should be needed for this now. After some waiting time we could finally test the system and also deliver the first systems to our customers.

Favero Assioma – a completely new power meter or a bePRO 2.0?

Many customers have asked us why Favero’s new power meter is not called bePRO 2. This caused confusion for some customers at first. The background here is apparently that the brand name bePRO could not be protected accordingly in all countries or that there were trademark problems with the name in some countries. Unfortunately, a not uncommon problem.

The new product name “Assioma” is the Italian word for “Axiom”. An axiom is a principle of a theory, science, or axiomatic system that is not justified or deductively derived within that system.

Technically, the new Assioma Powermeter is a further development of the well-known bePRO Powermeter.

Our first impression of the new Favero Assioma

The Favero Assioma Powermeter pedals and also the packaging look very high quality and well made at first glance.

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When you open the package, you are first presented with the two Assioma Powermeter pedals. Under a cover you will find the accessories. In detail, this is the charger with various plug attachments for country-specific sockets, two charging cables with magnetic plugs for the pedals, a set of pedal plates, an 8mm Allen key for mounting and the instruction manual in various languages. The user manual is now also available in German.

In direct comparison with the bePRO, the new Assioma Powermeter looks a bit slimmer and better designed. Compared to the bePRO, the round transmitter unit has been visually redesigned, making it look more modern and technical.

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The pedal bodies are almost identical. Here you can’t see any difference at first glance. However, the pedals are now fully Look Keo compatible. So they can be used not only with the Favero cleats, but also with original Look cleats.

A significant technical difference is the omission of the lock nut. On the bePRO Powermeter (on the right in the picture), the mounting angle had to be set precisely using these. In addition to the somewhat more complicated assembly, there was the danger with the bePRO that the axle could be pressed out of the housing if the assembly was not carried out correctly (tightening the lock nut too much).

Even if it is only a small optical change, it makes the Assioma Powermeter look better.

NEW – the magnetic plug on the Favero Assioma

The magnetic connector on the Favero Assioma is new. The pedals are charged via the magnetic plug. By avoiding an open plug connection, the pedals are now even more protected from moisture and dirt. There is also no need to cover the plugs anymore. This was quickly lost with the predecessor – the bePRO Powermeter.

The assembly of the new Assioma Powermeter

This is where we were most excited internally. Has the new Assioma Powermeter now become a real Plug&Play system? We’ll take the test! Unpack, screw on, test.

The assembly is indeed enormously simple. No special mounting tool is needed, and no special mounting angle or torque is required. You can mount the new Favero Assioma Powermeter like a normal pedal.

In 1-2 minutes the pedals are mounted. This was previously only available with the much more expensive Powertap P1 Powermeter.

Calibration of the Favero Assioma Powermeter

Every Assioma powermeter is calibrated at Favero’s factory to guarantee precision. Favero specifies a power measurement accuracy of +-2% here. Therefore, after mounting, only a zero offset calibration has to be carried out. This can be compared with the tare function of an electronic scale.

To do this, the Assioma powermeter must first be paired with the cycling computer.

The zero calibration is done via the wheel computer. Depending on the model, this is also referred to as “Calibration” in the menu. As with any power meter, this zero calibration should be re-performed periodically to eliminate possible measurement errors.

Temperature compensation of the new Assioma Powermeter

In the range of -10 to + 60 degrees Celsius, the Assioma Powermeter is automatically compensated. Thus, in practice, a corresponding measuring accuracy should be given for all usual temperature ranges.

Favero App for the Assioma Powermeter

Also new is the Favero app for the Assioma powermeter. This allows the pedals to be paired with the IPhone / Android Phone. Via the setup function it is possible to set the crank length and, if required, also to store a measurement correction value.

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Function test on the Cyclus 2 ergometer

The test on the high-precision Cyclus 2 ergometer has proven itself in our test setup for many years. Here, we mainly test the range from 100 to 400 watts, which is relevant for most athletes in training and competition.

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To do this, we increase the power by 50 watts every minute from 100 watts. In our experience, the measurement accuracy in practice can be derived very well from these values.

Measurement results

In the test, the new Assioma Powermeter shows extremely good measured values. We determine the average value in each stage.

The measured values are thus on the level of an SRM or also Quarq Powermeter, both of which have set reference values in our tests in the past.

Cyclus 2Favero Assioma
100 watt98 Watt
150 watts151 watts
200 watts203 Watt
250 watts251 Watt
300 watts302 Watt
350 Watt353 Watt
400 Watt402 Watt
In comparison, the Assioma proves to be quite precise

We have tested the double-sided version Assioma Duo. With the one-sided version, experience has shown that slightly larger deviations can always occur due to the one-sided measuring technique. We will also test this version, but the measured values are different from rider to rider due to the individual left / right distribution (dysbalance). This always makes a test less transferable in the case of a one-sided system.


With the new Assioma Powermeter Favero has set a new milestone in the field of pedal powermeters.

The Favero bePRO power meters were extremely good and reliable right from the start. Here we were quite surprised, because other manufacturers often needed several years and development stages to produce functional and reliable power meters.

Especially in the area of pedal power meters many other manufacturers had to struggle with problems. The development of the Garmin Vector, for example, took much longer than 5 years and even the current version still has minor problems. In our opinion, other manufacturers such as Polar have even failed in the “pedal power meter” project.

With the Assioma, Favero has improved even more compared to the already very good bePRO. Due to the very easy mounting it is now a real plug & play powermeter, which can be changed really fast and easy between different bikes.

With 799,- EUR (RRP) for the Assioma DUO and 499,- EUR (RRP) for the Assioma UNO both models are also very attractive in price.

From our point of view, both models are a clear buy recommendation. Our tip is the double-sided version Assioma DUO, because this still offers a very accurate double-sided measurement at a low price compared to other manufacturers. This can then also eliminate deviations due to a left/right imbalance, which unilateral systems quickly struggle with.

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