• Combine any length Quarq DUB crank arm with DFour DUB power meter for Shimano® R9100
11-Speed groupset.
• Designed for R9100 chainring. Compatible but not aesthetically pleasing with Shimano’s R8000 chainrings
and Shimano's R700 chainrings.
• Magic Zero: Automatically check and recalibrates your power meter to ensure it is always accurate.
• AXS™ app: Easily update firmware and view power meter metrics.
• OmniCal: Swap chainrings without affecting accuracy.
• 10K TEMPERATURE COMPENSATION: Each power meter is programmed with over 10,000 data points to eliminate temperature effects on power measurement.
• For use with Red D1, Force D1, or Quarq D1 crank arms
• SRAM Model ID: PM-D4-SPDR-D1