Certified Refurbished & Pre-Owned Deals Outlet Deals Like New Tuttio ICT EbikeQuarq DZero BB30 Aluminum Crank

The Quarq DZero BB30 Aluminum Crank gives you the same spider and power meter technology found in Quarq's higher-end builds, paired with forged aluminum crankarms that bring durability and dependability to training and racing alike. It's a crank-based power meter built around the DZero spider — Quarq's most refined measurement platform — without compromising on the data accuracy that makes power training worthwhile.

That spider does the real work here. It measures power to ±1.5% accuracy, broadcasts simultaneously over ANT+ and Bluetooth Low Energy, and compensates for temperature shifts across the ride so your numbers stay consistent whether you're warming up in the cold or finishing a long summer effort. There's no frame magnet required — the meter wakes automatically. The CR2032 coin cell battery is user-replaceable, and OmniCal means you won't need to recalibrate if you swap chainrings. An IPX7 waterproof rating keeps it reliable in wet conditions, and firmware updates are handled wirelessly through the Qalvin app.

Quarq DZero BB30 Aluminum Crank Specs at a Glance

• Bottom bracket standard: BB30
• BCD: 130mm
• Crank material: Forged aluminum
• Power accuracy: ±1.5%
• Connectivity: ANT+ and Bluetooth Low Energy (simultaneous broadcast)
• Battery: User-replaceable CR2032 coin cell
• Waterproof rating: IPX7