Stages Power Meter
Shimano Dura-Ace 9000
The draw: Cheapest crank-based power meter
Measuring power at the crank allows for the use of race and training wheels on a single bike. Stages, a small startup out of Boulder, Colo., created the most affordable crank-based power meter by a wide margin by measuring only left leg power. This isn’t a laboratory-grade tool, but it provided more than enough consistency compared to two-leg systems to accurately control and measure effort level while riding, both during steady efforts or variable interval workouts.