Quarq Dub DFOUR Dura Ace R9100 Road Bike Power Meter

With this Quarq Dub DFOUR Dura Ace R9100 bundle, you get a strong, lightweight and high performance double-sided power meter. This bundle consists of Quarq crank arms with Dub fitting, the Quarq Dfour power meter spider and possibly Dura-Ace sprockets.

More than ten years of experience
The power meter incorporates ten years of experience that Quarq has with power meters. This means that the chance of malfunctions is further reduced and the power meter gives strong, stable and reliable values. For example, this power meter has Quarq MagicZero technology, with which the power meter calibrates during cycling. It also automatically adjusts itself to changing temperatures, so you always have reliable data. As a result, the power meter has a deviation of only 1.5%.
The power meter is also weatherproof and has a waterproof rating of IPX7.

Rigid and light crank arms
The power meter is a spider to be placed on Quarq Dub crank arms. These carbon crank arms have a low weight and a high stiffness. To mount these crank arms you need a Sram Dub bottom bracket.

• Bluetooth low energy technology and ANT+ wireless connection
• AxCad: cadence measurement without magnet
• CR2032 battery that lasts 200 hours
• OmniCal: change your chainrings without affecting reliability
• 2 year warranty
• IPX7 waterproof rating
• Maximum deviation of only 1.5%
• Free Firmware Upgrades with the SRAM AXS App

Weight
• Spider weight: 275 grams
• Weight of crank arms: 825 grams
• Weight Dura-Ace R9100 outer chainring: about 110 grams
• Weight of Dura-Ace R9100 inner chainring: about 33 grams
• Total weight incl. chainrings: about 1245 grams

The Dura-Ace R9100 sprockets fit best on this power meter. However, you can also place the Ultegra R8000 and 105 R7000 sprockets on it without affecting the measurement results.

Note: SRAM DUB bottom bracket needed
This power meter requires a bottom bracket with a SRAM DUB fitting. A suitable bottom bracket can be found here.

• Quarq DFOUR Power meter spider
• Quarq DUB crank arms
• Possibly Dura-Ace chainrings + ring bolts