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
4 based on 1 ratings
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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!
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January 1, 2021
Are the cranks that come with this set carbon or alloy?
November 19, 2020