Introduction
The power meter is the most accurate training tool available. It measures in watts the power you develop with each pedal stroke, allowing for scientifically calibrated training. Here's how to choose the right one in 2025.
Why train with power?
- Objectivity: Power doesn't lie, unlike heart rate which is influenced by fatigue and heat.
- Precision: You know exactly what intensity you are working at.
- Progression: You can objectively measure your progress.
- Zwift: Essential for an optimal Zwift experience.
Types of power meters
Pedal-based power meter
The most accessible. Installs on any bike. Measures power from one or two sides.
- Garmin Rally: Reliable, SPD-SL and Look compatible (€600-900)
- Favero Assioma: Excellent value for money, very accurate (€400-700)
Crank-based power meter
Very accurate, installs on the left crank arm.
- 4iiii Precision: Lightweight and affordable (€300-400)
- Stages Power: The benchmark, used by pros (€350-500)
Crankset-based power meter
Integrated into the crankset, measures both sides.
- Shimano Dura-Ace R9200: Integrated into the groupset, very accurate
- SRAM Red AXS: Integrated into the SRAM groupset
Conclusion
A power meter transforms your training. Like a David & Clément wall mount, it's an investment that changes your relationship with cycling.