Quarq DFour Carbon Power Meter Crankset Chassis 110BCD 4 Bolt GXP 170mm (Shim)

This is Quarqs next generation in power meters, channelled into the Shimano-compatible DFour power meter. Designed for Shimano s lightweight, ergonomic Dura-Ace groupset, DFour is Quarqs most advanced Shimano-compatible power meter ever. The DFour builds upon 10 years of constant advances in technology from Quarq, and they have made over 150 improvements on the previous platform. New features include dual Bluetooth low energy and ANT+ wireless data transfer, with the new Qalvin BLE app. Revised circuitry and a new strain gauge design give you a solid record of improving your performance. The crankset has the sole job of converting effort from your legs into forward motion, so it is the perfect place to measure power.

Designed for Shimano 11-speed groupsets and Dura-Ace 9000 chainrings. Compatible with Ultegra 6800 and 105 5800 chainrings.

With an IPX7 waterproof rating, this powermeter is built to last. They feature a 2 year warranty with free firmware updates and acclaimed worldwide support. This powermeter is also incredibly versatile. Should your bike, discipline or ability change, the chainrings are completely replaceable.

Whats in the box:
Quarq DFour Power Meter Spider
2 piece crankset (Exogram carbon fibre crank arms)
Chainring bolts (Chainring not included)
Instructions

Features &; Benefits
Exogram carbon crank arms
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
Free firmware upgrades with the Qalvin app

Essential Details
Designed for Dura-Ace 9000 chainrings. Compatible with Ultegra 6800 and 105 5800 chainrings