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Quarq PowerTap G3 Disc Hub

The PowerTap G3 Disc Hub is a reliable & accurate hub-based power meter made specifically for mountain bike wheels.


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A balance of stiffness and weight, built out for you to see the optimal benefits of each - that is exactly what you get in the Quarq PowerTap G3 Disc Hub. The G3 Disc Hub is a lightweight, accurate, and consistent way to measure your power output and cadence as you push yourself to become a stronger, faster cyclist. The unique features of the G3 Disc Hub make this a perfect power measurement solution for mountain biking. The simple design of the G3 Hub and the sleek black matte finish make this power meter an attractive addition to your rig. Ease of use was also taken into consideration in the design, with the electronics built directly into the end cap, making swapping out end caps and replacing batteries a breeze. The PowerTap G3 Hub is an easy way to upgrade your bike to power. Power is measured from the wheel, giving the user the combined measurement of both right and left legs. The G3 Hub utilizes Bluetooth low energy and ANT+ wireless data transfer technology and integrates with the SRAM AXS app for free firmware updates.

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Model ID


  • Compatibility - 11-speed compatible (SRAM/Shimano), 135mm quick release or 142x12mm thru axle
  • Wireless Technology - ANT+ and BLE, use SRAM AXS app for firmware updates
  • Battery - CR2032, easily accessible at the end cap
  • Axle material - 15mm alloy
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Orientation Rear
Axle type QR
Spoke holes 24, 28
Brake compatibility Disc (6-bolt)
Color (hub) Black
Driver body type SRAM/Shimano MTB
Driver Mechanism 6 Pawls Annular Spring
Over Locknut Material n/a


Installation. Service. Compatibility. Find all the documentation needed to set up, use, and maintain your components in the SRAM Service hub.

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Quarq PowerTap G3 Disc Hub