| Manufacturer | Favero |
|---|---|
| Type | Spindle-based pedal power meter |
| Series | Assioma PRO RS |
| Cleats | Shimano SPD-SL |
| Price | Dual-sided RS-2 $789 / £649 / €699. Single-sided RS-1 $499 / £399 / €443. RS-UP upgrade kit $489 / £389 / €433 |
Specifications and features as at launch.
Expert opinion | Specifications | Battery life | Features | Quick answers | Further reading
Expert opinion
These are the power meter pedals I trust most. After six months of weekly use the Assioma PRO RS became my main source of power data, and in over a decade of riding with power, Favero has proved the most reliable and consistent brand I have used. The three PRO models share one spindle: the RS takes Shimano SPD-SL cleats, the RL takes Look Keo cleats and the MX takes Shimano SPD cleats for off-road. Only the pedal body and cleat differ.
Favero claims ±1% accuracy and measures the left and right legs separately. With no external pod the Q-factor is close to a normal road pedal, and installation and calibration are simple. My own comparisons against trainers and other power meters were less conclusive than other reviewers’ results, but nothing I found calls the accuracy into question. The limitations are small. Crank length is set manually, which is awkward if you swap pedals between bikes with different cranks. Oval chainrings can make power read high. The charger is a proprietary magnetic clip. Cheaper rivals now exist, but Favero is less well known and carries less trust by default.
Favero Assioma PRO RS
Accurate. Lightweight. Best value.
RRP $789.00
£649.00, €699.00
- use code:
Get it nowOrder now – Favero Assioma PRO RS Also sold direct bySpecifications
| Pedal | |
|---|---|
| Weight | About 123 g per pedal with electronics, excluding cleats (an update note on the review says about 130 g) |
| Accuracy | ±1% |
| Q-factor | +53 mm |
| Stack height | 10.5 mm, or 16.5 mm with a 6 mm cleat |
| Water resistance | IP67, sealed spindle |
| Operating temperature | -10 to +55 degrees C |
| Maximum rider weight | 120 kg |
| Cleat tension | 28 levels |
| © the5krunner. Link required. | |
| Fitting | |
| Pedal body | Swappable. Look Keo (RL) bodies cost about €95 a pair and convert RS spindles |
| Tools | 15 mm spanner; torque 35 Nm (30 to 40 Nm) |
| Setup | Activation and calibration in the Favero Assioma app |
| Wireless | Bluetooth and ANT+ |
| © the5krunner. Link required. | |
Battery life
| Item | Detail |
|---|---|
| Pedal battery | Up to 160 hours since the February 2026 firmware update, up from 60 hours |
| Comparison | Garmin Rally rated up to 90 hours |
| © the5krunner. Link required. | |
Features
- Left and right power measurement
- Power phase and pedal centre offset data
- Swappable pedal bodies so one spindle set can serve different cleat systems
- Battery life that now beats Garmin Rally on claimed hours
Favero Assioma PRO RS
Accurate. Lightweight. Best value.
RRP $789.00
£649.00, €699.00
- use code:
Get it nowOrder now – Favero Assioma PRO RS Also sold direct byQuick answers
How much does the Favero Assioma PRO RS cost?
The dual-sided Favero Assioma PRO RS-2 costs GBP 649 or USD 789, and the single-sided RS-1 costs GBP 399 or USD 499. The RS-UP upgrade kit costs GBP 389 or USD 489.
Is the Assioma PRO RS waterproof?
Assioma PRO RS is rated IP67 and has a sealed spindle.
What is the Assioma PRO RS battery life?
Assioma PRO RS lasts up to 160 hours since the February 2026 firmware update, up from 60 hours.
What cleats does the Assioma PRO RS use?
Assioma PRO RS takes Shimano SPD-SL cleats. Look Keo pedal bodies cost about EUR 95 a pair and convert RS spindles.
How accurate is the Assioma PRO RS?
Favero claims accuracy within 1%, with left and right power measured separately. The pedals connect over Bluetooth and ANT+.
How much does the Assioma PRO RS weigh?
Assioma PRO RS weighs about 123 to 130g per pedal. It has a Q-factor of +53mm and a stack height of 10.5mm.
Further reading
- Favero Assioma PRO RS review
- Favero battery life update
- Garmin Rally 210 and 110 buyer’s guide
- Best power meters
Related Favero pedals
Small things I always use
- Garmin 90-degree charging adapter: Charges your Garmin from any USB-C cable. Essential when travelling. I use one.
- Body Glide: The blue anti-chafe stick swimmers and runners carry. I use it.
- Speedo earplugs: Fewer ear infections and no cold-water dizziness. I use them.
- Dryrobe Advance: My winter changing robe for open-water swims. I use one. A cheaper option is the AONYIYI changing robe.
- Maurten: Race fuel that stays easy on the stomach. I use them.
- Beet It Sport nitrate shots: Beetroot shots I take in the days before a race. I use them.
- Garmin charging puck: The quickest way to top up before a session. I use one.
- Injinji: Toe socks that stop rubbing, so you run more. I use them.
- Ultimate toe protectors: Stop black toenails on long runs. They work. I use them.
- Compressport R2 v2 calf sleeves: My calf sleeves of choice. I use them.
- Cellucor C4: My pre-workout before hard sessions.
- TPU tubes: Schwalbe Aerothan, Tubolito and Pirelli SmarTube. Light, tiny spares. I use all three.
- G8 insoles: Adjustable insoles that are good. I use them.
- Cycplus Cube: A 97g electric pump that gets a road tyre rideable in two minutes. I carry one. 5% off with code THE5KRUNNER.
Watches and sensors
- Polar H10: My daily driver for waking HRV.
- Polar Verity Sense: My backup arm-worn HR sensor.
- Nomad bedside charger: Charges my iPhone and Apple Watch overnight. I use it, and many of their bands.
- Train.Red: The best muscle oxygen sensor I’ve used.
- Tymewear: Accurate heart rate and reliable ventilatory zones. I use it to pace endurance rides over an hour.
- Garmin Forerunner 970: A pro-grade triathlon watch. I use this.
- Apple Watch Ultra 4: My daily smartwatch. No phone needed on rides.
- Garmin Fenix 9 Pro: I’ve just bought one.
On the bike
- Continental GP5000 for everyday riding, and Aero 111 on the front for special occasions.
- Helmets: Specialized S-Works Evade 3 for road riding, and Rudy Project Wing for TT-style races. I use both.
- Ravemen FR300: A front light that mounts under your Garmin or Wahoo. I use one.
- Wahoo TRACKR Radar: I use it on one bike and Varia on the other. They perform the same.
- Garmin Varia RTL515: Radar that warns you of cars from behind. I use this model.
- Wahoo ELEMNT Roam 3: The bike computer that’s easy to use. I use mine on most rides.
- Favero Assioma Pro RS2: Accurate power pedals that swap easily between bikes. I use this model.
Home and indoor training
- NPE Runn: Makes my basic treadmill smart, sending more accurate speed and distance to my watch and Zwift. I use it.
- Google Wifi: Keeps Zwift connected in my pain cave. I use it.
- Apple TV 4K: Zwift on the big screen. I use two.
- Google Nest Doorbell (wired, 2nd gen): My video doorbell, running in both Google Home and Apple Home. I use it.
Health, recovery and sleep
- FreeStyle Libre 3 Plus: Shows how my blood sugar responds to diet.
- hDrop: Measures my sweat loss in summer and indoors.
- Fourth Frontier Zone: Checks my heart under load in hard sessions.
- Oura Ring 5: My partner’s recovery tracker of choice.
- Eight Sleep: A cooling mattress cover my partner and I use nightly.
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