Quarq DFour Power Meter Spider

$779.00

Upgrade a Quarq 8-bolt power meter (see below) or Quarq Prime Power Ready crankset with a DFour91 power meter to make the most of your Shimano® Dura-Ace® R9100 groupset, which embodies all the advances of the next-generation DZero platform.

 

SKU: 00.3018.173.000 Category:

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 / £660

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