DFour AXS DUB

• Pair a Quarq DUB crank of any length with a DFour DUB power meter for Shimano® R9100 11-speed groupset.
  
• Designed for the R9100 chainring. Compatible, but aesthetically unappealing with Shimano R8000 and R700 chainrings. Magic Zero: Automatic verification and recalibration of the power sensor for optimal accuracy. AXS™ application: Easy firmware update and viewing of power sensor data. OmniCal: Changing the platform does not affect accuracy. 10K Temperature Compensation: Each power sensor is programmed with over 10,000 data points to eliminate the influence of temperature on power measurement. For use with Red D1, Force D1 or Quarq D1 cranks. SRAM model identifier: PM-D4-SPDR-D1

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