Favero Assioma PRO RS-1 Power Pedals - Single Sided - Compatible with Shimano® SPD-SL® cleats
Favero Assioma PRO RS-1 Single-Sided Road Power Meter Pedals
The Favero Assioma PRO RS-1 is a single-sided road power meter pedal system for riders using Shimano SPD-SL cleats.
It measures power from the left pedal and estimates your total power output, giving you reliable power and cadence data without needing to change your crankset, bottom bracket or drivetrain.
If you already ride Shimano SPD-SL road pedals and want to start training with power, the PRO RS-1 is the clean, current Favero option.
Not sure which Favero model you need? Read our guide: Which Favero Power Meter Pedals Are Right for You?
Why we like them
The Assioma PRO RS-1 gives Shimano SPD-SL users a proper pedal-based power meter without adapters, hacks, or the older Duo-Shi style setup.
Install the pedals, pair them to your bike computer or training app, and you’re away. Because the power meter is built into the pedal axle, you can also move it between compatible bikes more easily than a crank-based system.
It’s rechargeable, tidy, lightweight, and gives you the key power numbers you need for training, pacing and tracking progress — without paying for full dual-sided measurement.
RS-1, RS-2, RL or UNO?
Choose the PRO RS-1 if you use Shimano SPD-SL cleats and want single-sided power measurement.
Choose the Assioma PRO RS dual-sided version if you use Shimano SPD-SL cleats and want true left/right power measurement.
Choose the PRO RL if you use Look Keo-compatible cleats.
Choose the Assioma UNO if you want a proven single-sided Favero road power meter pedal.
Different cleat systems, different data levels. Annoying? Slightly. Worth checking before buying? Absolutely.
Best for
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Road riders using Shimano SPD-SL cleats
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Riders starting to train with power
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Indoor and outdoor training
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Riders wanting a lighter, cleaner setup than older adapter-style systems
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Race bikes, training bikes and smart trainer setups
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Cyclists who want useful power data without paying for dual-sided pedals
Key features
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Single-sided road power meter pedal system
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Measures power from the left pedal
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Estimates total power output
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Shimano SPD-SL compatible
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Rechargeable lithium-ion battery
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Up to 160 hours battery life per charge
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ANT+ and Bluetooth connectivity
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Built-in cadence sensor
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Built-in gyroscope
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IAV Power System for accurate power measurement
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Compatible with oval chainrings
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Adjustable release tension
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IP67 waterproof rating
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Stack height: 10.5mm
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Q-factor: +53mm
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Left power pedal weight: 124.8g
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Right pedal weight: 123.8g
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Made in Italy
Data you can view
Via ANT+ or the Favero Assioma app:
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Power
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Cadence
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Platform Centre Offset
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Power Phase
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Pedal Smoothness
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Torque Efficiency
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Rider Position
Via Bluetooth:
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Power
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Cadence
Compatibility
Suitable for:
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Road bikes
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Indoor trainers
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Triathlon bikes
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Time trial bikes
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Riders using Shimano SPD-SL road cleats
Compatible cleats:
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Shimano SPD-SL cleats
What’s in the box
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Left pedal with power meter
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Right pedal without power meter
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Shimano SPD-SL compatible cleats
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Washers
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Magnetic charging connector
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Charging cable
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Warranty and safety information
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Manual
Trev’s take
The PRO RS-1 is the one to look at if you’re already on Shimano SPD-SL road cleats and want to start training with power without jumping straight to dual-sided pricing. It’s lighter and tidier than the older adapter-style options, easy to move between bikes, and gives you the main numbers most riders actually use.
