Simple versatile affordableintroducingpowertap p1s pedalsfor the last 17 years powertap has been creating the best power meters to give cyclists the edge that theyve been yearning for the latest addition to the powertap portfolio is the p1s a single sided version of the worldrenowned p1 pedal based power meter the p1s represents a more affordable way to get the simplicity and versatility that p1 users have grown to love power output is calculated by measuring power from one side in this