2inpower is rotors latest ndash and most advanced ndash power meter offering true left right power analysis in a performance crankset upgrade thats fully compatible with both round and q rings power data is collected independently for each leg to give the most advanced power metrics available on the market the left leg is measured through inpowers usual axle based strain gauges the electronics of which are linked to new sets of strain gauges placed on the driveside crankarm that measu