Gray Road Powermeters

Pedal-based units like Garmin Rally and Favero Assioma are the easiest to swap between bikes and work well for road, gravel, and indoor training, while crank arm meters are a budget-friendly upgrade that fit compatible drivetrains. Spider and crankset options deliver the highest accuracy for dedicated race bikes and pair well with a permanent setup.

Fit hinges on crank length and bottom bracket standard, so match the meter to your crank length (commonly 165–175mm) and BB type such as DUB, BB30, or PF30 to avoid chainline or geometry changes. Also confirm crank arm diameter and spindle fit so the sensor seats properly and bearings stay sealed.

Gravel-specific models like the Favero Pro MX-2 and Garmin Rally XC200 use rugged pedal bodies and sealed internals to resist dust, water, and impacts, making them better suited for off-road abuse. Look for alloy pedal constructions and IP-rated weatherproofing alongside robust axle or spindle sensors.

Premium units typically aim for around ±1% accuracy and offer long runtimes, often in the 200–400 hour range with rechargeable lithium-ion batteries. You’ll also find ANT+ and Bluetooth connectivity and cadence sampling in the 50–60Hz range for reliable data in training.

Yes, pedal-based meters are highly transferable and support common road cleats like Shimano SPD-SL, Look Keo, or Speedplay, with standard road pedal spindle lengths around 53mm. Dual-sided pedal options also give left/right balance data, which is handy when moving the unit between bikes.