QUARQ DFour DUB Carbon Crank Power Meter | Precision Performance for Road CyclingElevate your training and unlock your true potential with the QUARQ DFour DUB Carbon Crank Power Meter. Engineered for the dedicated road cyclist who demands uncompromising accuracy and performance, this sophisticated training tool is the key to smarter training, superior pacing, and achieving your competitive goals. As a benchmark among high-performance bike parts, this power meter integrates seamlessly into your setup to provide the critical data you need to push your limits.The core of this system is its exceptional precision. By measuring power from both your left and right legs independently, the DFour DUB offers invaluable insights into your pedaling balance and efficiency. With an industry-leading accuracy of +/- 1.5%, you can trust every watt reading, allowing you to structure your workouts with scientific precision, eliminate guesswork, and track your progress with absolute confidence. This dual-sided data is crucial for identifying and correcting muscular imbalances, ultimately leading to a smoother, more powerful, and more efficient pedal stroke.Crafted with lightweight carbon crank arms, the DFour DUB offers an incredible stiffness-to-weight ratio. This ensures that every watt you produce is transferred directly to the drivetrain, providing explosive acceleration for sprints and efficient power transfer for sustained climbs. The integration of SRAM´s revolutionary DUB™ technology simplifies compatibility across a wide range of frames, offering a durable and unified solution for your bottom bracket.Designed with the rider in mind, this power meter is packed with user-friendly technology. Dual ANT+ and Bluetooth low energy protocols provide universal compatibility with virtually any head unit or training app on the market. The innovative MagicZero™ feature provides automatic calibration as you ride, ensuring your data is always accurate without requiring you to stop and perform manual offsets. Furthermore, changing the standard CR2032 battery is a quick, tool-free process, and the unit's IPX7 waterproof rating guarantees reliable performance in all weather conditions. This is the ultimate Crank for any serious athlete´s Road Cycling setup, a top-tier choice in Power meters and Cranks.Brand:- QUARQ.Specifications:-QUARQ crankset powermeter ´´DFour´´DUB, without chain rings and bottom bracket11-speed compatible, carbon crank arms, CNC-machined spider made of aluminium, 110mm circle diameter, suitable for Shimano 11-speed chain rings Dura Ace 9100 and Ultegra R8000, Bluetooth and ANT+ radio technology, IPX7 water protection, accuracy:+/- 1.5%, both sides measuring, MagicZero for an automatic calibration, toolfree battery change (CR2032).-CRANKSET QUARQ POWERMETER.-DFOUR 170MM.-TW