Sorry, this product is no longer available!
Sram Quarq Dfour Power Meter for Shimano Chainrings is no longer available at Merlin Cycles. However you may find an alternative or updated product below.
Sram Quarq Dfour Carbon Power Meter for Shimano Cranksets
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This item was discontinued 22nd August 2019.

If you require help finding an alternative to this product please contact customer services.

Code: PMQ817
Sram Quarq Dfour Power Meter for Shimano Chainrings (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.

Please Note: Must be paired with a compatible SRAM bottom bracket

Joel Fantastic service fromMerlin as usual. Significantly cheaper than buying in Australia and the postage is just as fast. Quarq make power meters to last, and I expect this one to be no different. They just work! All weather, good battery life and next to no maintenance as well as a warranty that is second to none. Will buy again!