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Code: PMQ817
Sram Quarq Dfour Power Meter for Shimano Cranksets (Bottom Bracket and Chainrings not included)
The DFour power meter is a bolt-on upgrade for Shimano’s 11-speed Dura-Ace 9000, Ultegra 6800 and 105 5800 drivetrains. Every innovation in Quarq’s next-generation DZero platform is channeled into DFour. It embodies 10 years of Quarq technology advances with new features such as dual Bluetooth low energy and ANT+ wireless data transfer, the new Qalvin BLE app and compatibility with BB386EVO bottom brackets.
  • Designed for Dura-Ace 9000 chainrings. Compatible with Ultegra 6800 and 105 5800 chainrings.
  • Must be paired with a compatible SRAM bottom bracket.
  • Free firmware upgrades with the Qalvin app.
  • BB30 versions ship with the spacers and wave washer required for BB386EVO installation.
 
Features:
  • Bluetooth low energy technology and ANT+ wireless data transfer.
  • AxCad - no magnet.
  • 10K Temperature Compensation.
  • Battery - CR2032, 200-hour battery life, change without tools.
  • OmniCal - swap chainrings without affecting accuracy.
  • 2-year warranty.
  • IPX7 waterproof rating.
  • Accuracy -- within 1.5%, measuring both legs
 
Specification:
  • Material: CNC Machined Aluminum Spider, Exogram™ Carbon Crank Arms
  • Accuracy: 1.5%
  • Bolt Circle Diameter: 110 Asymmetric BCD
  • Q-Factor: 145mm
  • Wireless Technology: ANT+, Bluetooth low energy technology
  • Battery: CR2032, 200 hours of riding time
  • Weight: 588g
  • Head Unit: ANT+™ and Bluetooth® low energy technology compatible head units (available separately)
  • Compatibility: Shimano® 11-speed chainrings (except for R9100). Designed for Dura-Ace® 9000. Compatible with Ultegra® 6800 and 105® 5800.