Quarq DFour AXS DUB Power Meter Spider (110mm Asymmetric BCD) (Spider Only)

Quarq DFour AXS DUB Power Meter Spider combines the advanced power meter technology with SRAM's innovative DUB platform to bring you a simple spider-based power meter. Features: Simplified part choices, quality materials and a broader compatibility for bottom brackets and chainrings, brings power on every ride DFour DUB is designed for Dura-Ace R9100 chainrings Spider must be paired with a compatible Quarq DZero DUB crankset and SRAM DUB bottom bracket Bluetooth low energy technology and ANT+ wireless data transfer MagicZero technology automatically checks and recalibrates your power meter as you ride - no need to manually calibrate AxCad system provides no-magnet cadence data Use the AXS app to easily update firmware and view power meter metrics Measures power for both legs with +/- 1.5% accuracy Uses a CR2032 battery that can be replaced without tools OmniCal system allows you to swap chainrings without affecting accuracy IPX7 waterproof rating Specs: Chainring BCD 110mm Color Black