The Assioma Pro MX is Favero’s new off-road power meter pedal system for mountain bike, gravel and cyclocross riders.
The pedals are jam-packed with interesting tech, making them a great choice for data-hungry off-road riders.
Here, we look at the pedal’s key design details and novel performance metrics.
If you simply want to know how the pedals perform on the trails, check out our full review, or head to the Favero site for more information.
Neat integrations
Unlike its competitors – and its own Assioma Duo and Duo Shi pedals – the Favero’s Assioma Pro MX pedals are hard to distinguish from a conventional non-power meter-equipped pedal, with the battery, strain gauges and electronics housed wholly inside the stainless steel spindle.
Favero says this was exceptionally challenging from an engineering perspective, but protects the components from impacts – a near-certainty in off-road riding.
No power dropouts
Power meters generally use fixed integrated rechargeable batteries or user-replaceable non-integrated batteries.
The Assioma Pro MX pedals have an integrated rechargeable battery housed within the spindle.
Compared to a non-integrated battery, Favero claims its design greatly lessens the chances of a power dropout.
Power dropouts are typically caused by a non-integrated battery wiggling loose from its connections on bumpy terrain.
The Assioma Pro MX's battery life is competitive, with a runtime of at least 60 hours.
The reduced chance of water ingress and power dropouts, in addition to more accurate battery life indication, make it the best choice here.
IAV Power System
Aside from build quality and aesthetics, data accuracy is the most important factor for a performance-conscious off-road rider shopping for a power meter.
Like other power meters, the Assioma Pro MX pedals calculate wattage by multiplying the rider’s cadence (RPM) by torque or force (Nm).
However, some power meters only estimate real angular velocity for the entire pedal stroke.
This wrongly assumes a smooth and consistent application of power throughout the pedal stroke, reducing the accuracy of power measurements.
Favero’s Assioma Pro MX pedals feature an integrated gyroscope to detect instant angular velocity throughout the entire pedal stroke. This accounts for the wide variability that characterises pedal strokes in cycling, increasing accuracy.
Favero says it has tested the pedals in the lab and real world, with a claimed accuracy of +/- 1 per cent.
Cycling dynamics
The pedals also provide Platform Centre Offset (PCO) – a new metric expanding on the already-existing metrics offered by the Favero Assioma power meter range.
PCO shows how force is distributed across the pedal platform during a pedal stroke.
Power Phase (PP) indicates to riders the segment of the pedal stroke where the most power is being produced.
Torque Efficiency (TE) indicates how efficiently your power output translates into forward motion during a pedal stroke. Expressed as a percentage, TE shows how much of your generated power contributes to propelling the bike forward.
Pedal Smoothness (PS) is a metric that measures how evenly power is distributed throughout the entire pedal stroke. Expressed as a percentage, a PS value of 100 per cent indicates perfectly smooth power delivery across the full 360-degree rotation. Higher PS values suggest a more consistent and efficient pedalling motion.
Finally, Rider Position shows how much time a rider has spent seated or standing.
These metrics should be useful for cyclists looking to eke out every last bit of performance – whether that’s by adapting their pedalling style or spending more time in certain positions on the bike.
