The Garmin Rally RK Upgrade pedal is the quickest way to turn our training up a notch. This pedal pairs with our single-sided RK100 power meter, giving us accurate power readings for our left and right legs. We're using this pedal on our training and race-specific road bike, giving us every bit of analyzing data for us and our coaches to see. The easily completes the RK100 system and with a ride life of 120 hours, we're only expecting to replace batteries a couple of times a year.