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Specs

Cleat Standard: Shimano SPD-SL (3-bolt)

Sensing: Single (left), doubles for total power

Accuracy: +/- 1%

Battery: Up to 90 hrs per charge

Smart Calibration: Pedal IQ

Upgradeable: To dual-sensing with RS210 right-sensing pod

Compatible: Garmin Edge computers, Garmin Connect

FAQ

What is the difference between single-sensing and dual-sensing?: Single-sensing measures power from the left pedal only and doubles it for estimated total power. Dual-sensing measures both sides independently for true total power plus left/right balance and cycling dynamics. The RS110 can be upgraded by adding an RS210 right-sensing pod.

Can I upgrade the RS110 to dual-sensing later?: Yes. Adding the Garmin Rally RS210 right-sensing pod upgrades the RS110 to full dual-sensing without replacing the entire pedal, making the RS110 the most cost-effective path to bilateral power data for Shimano SPD-SL riders.

What is Pedal IQ smart calibration?: Pedal IQ monitors temperature changes and other calibration factors, then alerts you on a paired Garmin device when a manual calibration is recommended to maintain accuracy.

Best For

Road cyclists on Shimano SPD-SL pedals who want an accessible entry into pedal-based power measurement without committing to dual-sensing upfront. The RS110 can be upgraded to dual-sensing later without replacing the full pedal.

Garmin Rally RS110 Power Meter - Single Sensing | Shimano Reviews:

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