Quarq DFour Power Meter Spider

Designed for Shimano®’s lightweight, ergonomic Dura-Ace® groupset, DFour is Quarq’s most advanced Shimano®-compatible power meter ever. DFour 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.

The DFour power meter spider works with Shimano®’s 11-speed Dura-Ace® 9000, Ultegra® 6800 and 105® 5800 chainrings.

Features & Benefits

  • Bluetooth low energy technology and ANT+ wireless data transfer.
  • AxCad – no magnet.
  • 10K Temperature Compensation.
  • Battery – CR2032, 200-hour battery life, change without tools.
  • Power Balance.
  • OmniCal – swap chainrings without affecting accuracy.
  • 2-year warranty.
  • IPX7 waterproof rating.
  • Accuracy – within 1.5%, measuring both legs.
  • Free firmware upgrades with the Qalvin app.

Essential Details

  • Designed for Dura-Ace® 9000 chainrings. Compatible with Ultegra® 6800 and 105® 5800 chainrings.
  • Uses the 8-Bolt crank to spider interface.
  • Quarq ELSA RS Power Meter owners can upgrade to the DZero platform with a DFour Power Meter Spider.
  • Additional clearance to fit BB386EVO bottom brackets.

8-Bolt Compatibility

Power meters and cranksets on 8-bolt since release:

  • Quarq ELSA RS (Aug ’14)
  • Quarq RIKEN AL (Apr ’15)
  • Quarq Prime Power Ready Cranksets (Mar ’16)
  • SRAM RED Power Ready Cranksets (Mar ’16)
  • SRAM XX1 Power Meter (Aug ’14) (Note: Boost spiders should not be paired with 156Q crank arms)
  • SRAM RED BB386EVO standard crankset (Mar ’16)

Power meters switched to 8-bolt:

  • Quarq RIKEN R (Revision AEQ onward, except warranty/replacement – Jul ’15)
  • SRAM RED (eTap graphics – Jan ‘16)

Incompatible products:

  • Quarq ELSA R

ORDER INFORMATION:

If the information you provide results in an incorrect order that must be returned you will be responsible for the $50 restocking fee. If you are unsure about any information required, contact us.

OUR STORE HOURS:

Monday – Friday. 9am – 5pm Eastern Time.
Orders placed outside of store hours may not be filled until store hours resume.

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Price $779.00

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