Power Meters

Shimano Dura-ace R9100-P $2,100

Shimano announced its crank-based power meter in 2016. A few of the pros were running them last year and now the unit is making its way to the joes. Since the company makes both the crank and the meter, everything is nicely integrated. The battery is tucked into the spindle. You recharge it, after 300 hours, via a cable that affixes itself to the unit by its magnetic end. Each crankarm has its own strain gauges to give you left and right power readings. The unit broadcasts all that data in a single ant+ transmission to your bike computer. Updates to the firmware are done via Bluetooth. The unit is easy to zero at the touch of a button. Accuracy is said to be ±2 per cent. Weight weenies will like that all this power infrastructure only adds 70 g. ( bike.shimano.com)

Garmin Vector 3 $1,300

The Garmin Vector 3 makes adding a power meter as easy as installing pedals. For this pedal-based unit, Garmin was able to ditch the pods that were on the Vector 2. The new model looks better and is more user-friendly. You’ll need the Keo-style cleats that come with the pedals in order to clip in. Battery life is around 120 hours and accuracy is ±1 per cent. The set weighs in at 316 g, which is about 68 g heavier than a pair of Shimano Ultegra pedals. The Vector 3 works with Garmin Edge head units to give you a lot of information about your pedal strokes, including where on the pedal you’re applying power. With that data, you might be able to improve your cleat position. ( garmin.com)