Equipment > Components > Power Meters > Power Meters - Pedals
Description
Power meters typically lock you into one pedal system, but the Rally RK100 from Garmin takes a different approach with transferable spindles. The power-sensing hardware lives in the spindle rather than the pedal body, which means you can move it between Rally RS road bodies, Rally XC mountain bodies, or keep it in the RK platform for LOOK KEO compatibility. If you switch between road and gravel bikes seasonally or upgrade frames, the same power meter follows without buying a complete second system.
Single-sensing measures left-leg power and cadence, then doubles the left value to estimate total watts. This works well for most riders whose legs produce relatively balanced power. The sensor sits in the left spindle and captures force data through strain gauges that measure deflection as you pedal. Accuracy hits plus or minus 1 percent, which puts it in the same range as hub-based and crank-based systems. The unit supports field calibration through your Edge computer or compatible head unit, so you can zero the meters before rides to account for temperature changes.
Installation uses a standard 15mm pedal wrench. Thread the spindles into your cranks, tighten to spec, and pair with your head unit via ANT+ or Bluetooth. The pedals communicate with Edge cycling computers, Garmin watches, and third-party devices that support standard power meter protocols. Data syncs to Garmin Connect for analysis and transfers to TrainingPeaks, Strava, or whichever platform you use for tracking workouts. Tacx desktop app connectivity works when you take training indoors.... Read More
Features
- Single-sensing power meter measures left leg, doubles for total power estimate
- LOOK KEO cleat compatible with adjustable release tension
- Plus or minus 1 percent accuracy with field calibration support
- Up to 120 hours battery life on LR44/SR44 or CR1/3N batteries
- ANT+ and Bluetooth connectivity for head units and smartphones
- Compatible with Garmin Edge computers, Garmin watches, and third-party cycling computers
- Syncs to Garmin Connect, TrainingPeaks, Strava, and Tacx desktop app
- Transferable spindle system works with Rally RS and Rally XC conversion kits
- Upgradeable to dual-sensing with Rally RK100 upgrade kit
- Threaded metal inserts in pedal body for durable battery cap attachment
- IPX7 water resistance
- 53mm Q-factor standard, 55mm with included 2mm washers
- 12.2mm stack height
- 105kg maximum rider weight
- Includes red 6-degree float LOOK KEO cleats and cleat hardware
- Standard 15mm pedal wrench installation
- 334 grams