$1,179.00 - $1,179.99
When Quarq set out to build their next-generation power meter, they wanted to build the best-performing power meter for every facet of cycling and triathlon, and for riders at every level. Like its Quarq brethren, the new DFour measures power in the heart of the bicycle — the crankset spider, scientifically proven to be the place for the most accurate measurement. With a new measurement circuit, revised strain gauge design, improved accuracy throughout the pedal stroke and software advances built into the Qalvin App, the DFour represents the state of the art in power meter technology. Every innovation in Quarq’s next-generation DZero platform is channeled into the DFour Power Meter Crankset. It embodies 10 years of Quarq technology advances with new features such as dual Bluetooth low energy and ANT+ wireless data transfer, the new Qalvin BLE app and compatibility with BB386EVO bottom brackets. - The DFour power meter is a bolt-on upgrade for Shimano’s 11-speed Dura-Ace 9000, Ultegra 6800 and 105 5800 drivetrains. - Must be paired with a compatible SRAM bottom bracket. - ELSA RS power meter owners can upgrade using the DFour Power Meter Spider. - Free firmware upgrades with the Qalvin app. - Compatible with BB30 bottom bracket. - BB30 versions ship with the spacers and wave washer required for BB386EVO installation.
Every innovation in Quarq’s next-generation DZero platform is channeled into DFour: 10 years of Quarq advances in power meter technology, plus new features such as dual Bluetooth low energy and ANT+ wireless data transfer, revised circuitry, a new strain gauge design and the new Qalvin BLE app. The DFour91 is designed for Shimano’s Dura-Ace R9100 chainrings. It uses Quarq’s lightweight, sturdy ExogramTM carbon crank arms. GXP and BB30 versions work with every bottom bracket shell, including BBright and BB386EVO. - DFour is designed for Dura-Ace 9000 chainrings and compatible with Ultegra 6800 and 105 5800 chainrings - DFour91 is designed for Dura-Ace R9100 chainrings - Must be paired with a compatible SRAM bottom bracket - 8-bolt power meter owners can upgrade using a DFour or DFour91 power meter spider - 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 - OmniCal — swap chainrings without affecting accuracy - 2-year warranty - IPX7 waterproof rating - Accuracy — within 1.5%, measuring both legs - Chainrings and bottom bracket sold separately
$1,399.00 - $1,449.00
Consistency and accuracy in training lead to better results, which is why using a consistently accurate and reliable power meter is vital. Quarq power meters using Quarq technology, measure power at the crankset spider. This the best place on the bike to measure power because all of your pedaling effort flows directly through the spider and it can be measured with great precision. Quarq's Active Temperature Compensation, which is calibrated with over 10,000 data points, makes their ELSA RS Power Meter Crankset accurate to within 1.5% (strain gauges benefit from accurate temperature). Plus the ELSA RS is specifically designed to match Shimano's 4-bolt Hollowglide chainrings for a seamless junction between ring and chassis. Quarq's Exogram Hollow Carbon crankarms deliver every watt to the road while keeping the weight incredibly low. ANT+ technology lets you hook up your desired compatible head unit, the LED indicator flashes when the power meter is on, and the single, easily-replaced CR2032 battery lasts for up to 300 hours of ride time. - Compatible with 11-speed Shimano chainrings (Dura-Ace, Ultegra, and 105) - Chainrings and bottom bracket are sold separately - Requires ANT+ head unit (sold separately) - 616 grams (GXP, 172.5mm) - Battery life: 300 hours
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