Two years ago we turned up the Favero Assioma, the lightest power meter pedals you’ve never heard of, but now they are back with a new set of DUO-Shi spindles that slide power measurement into your existing Shimano road pedal bodies. Why is that better than their original Look-compatible version? And what are the downsides? Let me explain…
Favero Assioma DUO-Shi makes Shimano road pedals power meters
Favero’s Assioma power meter pedals are simple in concept. With the strain gauges inside a special set of spindles and the electronics for power, processing & communication inside a compact housing around the stainless steel axle next to your crank arm, they are compact & self-contained. That means a lightweight, conventional road pedal body that works with regular road cleats (& road shoes), and all the sensitive gadget bits are safely out of the way of regular road impacts & possible crash damage.
And as with most pedal-based power meters, they are quick & easy to move from one bike to the next.
The fact that the Look-compatible Assioma pedals deliver top-tier ±1% power accuracy at just 150g per pedal, low 10.5mm stack, low 54mm pedal Q-factor, at just 690€ for true dual-sided power measurement is hard to argue with.
But…
A lot of road cyclists are super picky about their pedals. And many prefer the wider pedal platform support of Shimano SPD-SL pedals, even their improved walkability. So Favero has been developing a Shimano-compatible Assioma DUO system for quite some time. And now it’s ready.
What’s new in DUO-Shi? And why?
Basically, Favero reworked their Assioma power metering spindle to fit inside the regular Shimano pedal bodies that you are already riding. It’s actually cheaper than their Look DUO setup, and you can upgrade Shimano SPD-SL pedals from Tiagra all the way up to Ultegra with the same DUO-Shi setup.
The catch?
Your pedal stance is going to get a lot wider – your feet are going to end up around 2cm farther apart…