Quarq: DFour DUB power meter spider must be paired with a compatible Quarq DZero DUB crankset and SRAM DUB™ bottom bracket.

DFour DUB is designed for Dura-Ace R9100 chainrings.

Every innovation in Quarq’s DFour platform represented the 10+ years of Quarq’s advances in power meter technology. This same platform is now combined with SRAM’s innovative DUB technology to bring you the simplest spider-based power meter. Simplified part choices, quality materials and a broader compatibility for bottom brackets and chainrings, brings power on every ride.

Features & Benefits

MagicZero™ – automatic calibration as you ride. No need to back pedal or manually calibrate through your headunit.Bluetooth low energy technology and ANT+ wireless data transfer.

AxCad – no cadence magnet required.10K Temperature Compensation.

Battery – CR2032, 200-hour battery life, change without tools.Power Balance.

OmniCal – swap chainrings without affecting accuracy.2-year warranty.IPX7 waterproof rating.

Accuracy – within 1.5%, measuring both legs.

All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 and eBikes will incur a £25 delivery fee.

Free Delivery On Orders Over £199.99 - When you spend more than £199.99 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.

Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.

At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.

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