PowerTap have been involved with monitoring cyclists power for several decades. Over the years their products have come under the Saris and CycleOps names as well as PowerTap. Their range of products is limited to 3 main power metering systems but these key products satisfy the majority of cyclists. They have the Powertap G3 power metering hub, now in it's third generation, the Powertap C1 power metering chainring and the bi-laterally superb Powertap P1 power meter pedals (plus the P1S with power monitored in just one pedal)
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