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DFOUR DUB Road Power Meter Crankset

4 out of 5 stars
1 Review
Current price: $443.80 - $570.60 Original price: $634.00
Up to 30% off

Style & Size:


Why We Like The DFOUR DUB Road Power Meter Crankset

Quarq's DFOUR DUB Road Power Meter Crankset pairs directly with your Dura-Ace R9100 chainrings to take your training and racing to the next level of precision. Quarq continues to push the accuracy standards of their meters, and the standout feature is the power reading accuracy within +/-1.5%, allowing you to train and race to the numbers and see how you're progressing. Quarq also eases set-up before each ride with their MagicZero feature for an automatic calibration procedure. Once out in the sun or battling months of cold winter, the meter also compensates for changing temperatures for ride-long, consistent readings.

The DFour is IPX7 waterproof rated and operates for up to 200 hours on a single CR2032 battery. The meter is paired with Quarq's carbon crank arms in various lengths and requires SRAM's DUB bottom bracket to fit your bike.


  • Power meter crankset design specifically for Dura-Ace R9100 chainrings
  • Uses SRAM's DUB bottom bracket for ease of compatibility across BB shells
  • Power reading accuracy within +/-1.5% for precision training and data collection
  • MagicZero automatic calibration and 10K temperature compensation
  • Bluetooth and ANT+ communication to your cycling head-unit
  • Compatible with SRAM AXS mobile app
  • Item #QRQ802S
[crank arms] carbon
Powermeter Type
11-speed road drivetrains, SRAM DUB bottom brackets, 110 BCD
Bluetooth and ANT+ connection, MagicZero automatic calibration, AxCad cadence sensor, 10K temperature compension, OmniCal automatic chainring calibration, IPX7 waterproof rating
Accuracy (+/-)
CR2032, tool-free replacement
Operating Time
2 pedal washers, chainring bolts
Claimed Weight
[175mm] 1lb 3.2oz (544g)
Manufacturer Warranty
2 years
road cycling, gravel

Overall Rating

4 based on 1 ratings

Review Summary

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4 out of 5 stars

January 7, 2021

Wrong bolts in box. C'mon SRAM!

I've used it several times

Would be easier to install if it came with the correct chainring bolts! Was easy once I realized that 3 out of 4 of the provided bolts were about 5mm longer and were bottoming out before securing the chainrings. Just used shimano bolts from my old crankset instead. Glad I didn't try to force it... Other than that, so far, so good!

Scott D