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PowerTap G3 Rear Hub

The CycleOps Power Powertap G3 hub is about 80 grams lighter than the SL+ and is billed as the world's lightest power meter. Its 336 gram actual weight means there is virtually no penalty over a standard rear hub and weight savings is estimated at least 250 grams over crank-based power meters. This allows the weight-conscious competitor to use this hub on race day to record critical power information.

In addition to being lower weight, the new G3 hub also has a smaller profile with a stealth black finish. Powertap's excellent reliability has been further enhanced with now field-serviceable electronics that deliver better signal strength. One of the less talked about improvements is the wider hub flange which contributes to more even left/right spoke tension thus building into a stronger, longer lasting wheel.

The G3 hub is packaged as a hub only. It is ANT+ compatible for use with Joule, Garmin or any other favorite ANT+ computer. Some of the other optional accessories include a matching G3 front hub, and a heart rate monitor strap.

Excel Sports Boulder's DT certified wheel builders can build this hub into a wheel. Just use our Online Wheel Builder or call our friendly and knowledgeable sales staff of cyclists 800-627-6664.


  • 336 grams actual weight
  • 15mm alloy axle
  • Alloy hub shell
  • Uses one CR2032 battery
  • Accurate to within +/- 1.5%
  • Can be paired with any ANT+Sport device such as a Joule or Garmin
  • Wheel build info: 57mm flange diameter, center to flange 38mm left and 17.4mm right

This PowerTap G3 hub is compatible with all Shimano and SRAM 8, 9, 10 and 11 speed drivetrains, Campagnolo versions are compatible with 9,10 and 11 speed Campagnolo drivetrains.

Item #: 427649 Weight: 336g
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