Please note:
With its 110 BCD 4-bolt design, it is compatible with all standard 110 BCD 4-bolt chainrings.
Compatible with 11-12 speed system. ( GRX 1x and 2x chainrings are not compatible; 10-speed and lower groupsets are not compatible.)
With its cost-effective design that balances reliability and compatibility, the GEOID PM500 delivers professional, high-quality power measurements at its core. It helps you discover the scientific approach to entry-level e-biking, whether for daily commutes, club rides, or beginner racing.
±1.5% power accuracy
680g lightweight design
300-hour ultra-long-lasting battery
4 core data points
24mm spindle compatible with
Bottom bracket compatibility: BSA, T47, BB86, BB30 (road bikes only)
Applicable models: Road bike (11/12-speed)
Featuring a dual-sensor fusion algorithm that integrates highly sensitive strain gauges with an accelerometer, it monitors ambient temperature in real time and dynamically compensates for measurement deviations, ensuring unwavering accuracy and stability.
The crank is forged from 6061 aluminum alloy for superior mechanics; the platform is fully CNC machined from 7075 aluminum alloy with an optimized structure. The total weight is 680 g (170 mm crank + 100 g chainring), providing maximum stiffness and efficiency.
Power: ±1.5% accuracy captures every watt of output power with fast response.
Cadence: Dynamic tracking from 20–240 rpm helps maintain a stable output.
Left-right balance: Identifies power differences between the legs to optimize power transfer efficiency.
Pulse analysis: Analyzes the circular pedaling rhythm and improves movement pattern.
Effortless setup and ready to use immediately after installation.
The complete set includes the PM500 Spider power meter and the Senicx PR3 crank – a perfect combination. With its 110 BCD 4-bolt design, it is compatible with all standard 110 BCD 4-bolt chainrings. You can switch between single and double chainrings as needed. It is perfectly compatible with 12-speed system.
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