my18_qrq_pm_dfour_rgt_1000x1000

Quarq DFour Power Meter Spider

$779.00

Use the Quarq DFour Power Meter Spider to upgrade a Quarq ELSA RS Power Meter to the DZero platform.

There is high demand for this product. New orders will ship during the week of April 1, 2017. We appreciate your patience and support.

Available on backorder

SKU: 00.3018.173.000 Category:

Product Description

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.

$779 / €779 / £693

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

Additional Information

Bolt Circle Diameter

Shimano® 4-Arm

Compatibility

Shimano® 11-speed chainrings (except for Dura-Ace® R9100). Designed for Dura-Ace® 9000. Compatible with Ultegra® 6800 and 105® 5800.

Material

CNC Machined Aluminum Spider

Accuracy

1.5%

Wireless Technology

ANT+, Bluetooth low energy technology

Battery

CR2032, 200 hours of riding time

Weight

154g