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Quarq DFour DUB Power Meter

Josh Matthew March 14, 2020


The ultimate spider-based power meter: accurate, durable and consistent!

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Quarq DFour DUB Power Meter

The Quarq DFour DUB Power Meter benefits from over 10 years of Quarq’s experience in power meters. The result is the ultimate spider-based power meter: one that is accurate, durable and consistent in all conditions. In addition, the DFour platform is now combined with SRAM’s new DUB technology. This means easy part choices, quality materials and a broader compatibility for bottom brackets.

Designed for use with Shimano DURA-ACE 9100 chainrings, the Quarq DFour DUB Power Meter runs for 200 hours on a single CR2032 battery and comes with a full 2-year warranty.



Accurate, Durable, Consistent

The DFour benefits from over 10 years of Quarq’s experience in power meter technology.


With MagicZero, the power meter automatically calibrates as you ride – no manual offsets needed!

10K Temp. Compensation

The power meter reads true regardless of the environment and any changes in temperature.

DUB Technology

DUB crank arms and bottom bracket adds durability, simplicity and broad compatibility.


With SRAM’s OmniCal, you can change chainrings and your power meter stays accurate.


You select the chainring, crank arm length and DUB bottom bracket to fit your liking.


Crank arms: The power meter can be purchased with or without crank arms. Available crank arm sizes are:

  • 165 mm
  • 167.5 mm
  • 170 mm
  • 172.5 mm
  • 175 mm



  • Crank arms: The Quarq DFour DUB Power Meter spider must be paired with Quarq DZero DUB crank arms and SRAM DUB bottom bracket
  • Chainrings: Designed for use with Shimano DURA-ACE 9100 chainrings. Shimano Ultegra R8000 and 105 R7000 chainrings also work, however they don’t match the color of the power meter as nicely


In the Box

  • Quarq power meter
  • Quarq DZero DUB Crank Arms (if purchased)
  • CR2032 Battery
  • Quick Start guide


Quarq DFour DUB Specs

NameQuarq DFour DUB Power Meter
Bike TypeRoad
Location of Power MeasurementSpider
Left or Both Legs MeasuredBoth
Independent Left/Right MeasurementNo
InstallationMore involved (60 min. estimated)
Communication ProtocolANT+ and Bluetooth SMART
Claimed Accuracy+/- 1.5%
Weight165 grams (spider only)
Battery TypeCR2032
Battery Life200 hours
Method of Cadence MeasurementAccelerometer
BCD110 mm
Warranty2 year



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