The G3 rear hub is the smallest and lightest powermeter that Powertap has ever made, weighing in at a scant 325 g. Count on Powertap's same reliable metrics, like the ability to record multiple power, cadence and speed functions, plus ride distance, ride time, odometer and energy expenditure. Additionally, a removable side cap makes the hub incredibly easy to service without needing to dismantle the wheel and wider flanges provide a stiffer overall wheel. Because no heart rate strap or head unit is included, you can pair it with your favorite (or current) ANT+ watch or computer (such as a Garmin Edge series) for a complete ride profile. Add the free PowerAgent software package, and you will have all the tools you need to guarantee you make the most of your power data. Scroll to our wheel page for options and pricing on custom wheel builds with the Powertap G3. Specify 28 or 32-hole and Shimano or Campagnolo compatible.