PowerTap G3 Hub review

The PowerTap G3 Hub is a rear-hub-based power meter. It is one of the most established power meters on the market

PowerTap G3
(Image credit: Cycling Studio)
Cycling Weekly Verdict

Overall this is an excellent power meter. Reliable and accurate, we highly recommend the PowerTap G3. The only downside is that you either have to own two, or use the same wheels for racing and training if you want power.

Reasons to buy
  • +

    Reliable

  • +

    Good warranty

  • +

    Accurate

  • +

    Tried and tested design

Reasons to avoid
  • -

    If you use separate wheels for training and racing, you may not always have power

  • -

You can trust Cycling Weekly. Our team of experts put in hard miles testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

Hub-based systems such as the PowerTap G3 are among the most simple power meters on the market. With fewer variables acting on the strain gauges, many engineers regard the hub as the most accurate location to measure power.

Power measurement will be slightly lower here than on a pedal or crank system as you are measuring what is left post-drivetrain losses. This means that if your chain is dirty, your power reading will be slightly lower than if clean.

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