Shimano Quarq DFour R91 Power Meter (for Dura Ace)

Category: Equipment > Components

Base price:1,299.50 $
Current price:1,299.50 $
Reduction:terms-259.90 $
Your price:1,039.60 $
Estimated shipping price:terms38.38 $
(per item):
Note: VAT charge is excluded for buyers outside Switzerland



  • Description
  • Specifications
Delivery Time 2/3 weeks

Designed especially for Shimano®’s Dura-Ace® R9100 series, the Quarq DFour91 Power Meter brings Quarq’s next-generation DZero platform to Shimano®’s latest groupset. Compatible with Ultegra® R8000 and 105® R7000 chainrings – aesthetically it will not match.

DFour91 embodies 10 years of Quarq advances in power meter technology, plus new features such as dual Bluetooth Low Energy and ANT+ wireless data transfer, revised circuitry, a new strain gauge design and the Qalvin BLE app.

The DFour91 power meter is a bolt-on upgrade, pairing with the 11-speed Dura-Ace® R9100 or Ultegra® R8000 chainrings. Get the chassis, which includes Quarq’s lightweight, sturdy ExogramTM carbon crank arms. The GXP and BB30 versions work with every bottom bracket shell, including BBright and BB386EVO. If you already have a power meter using the 8-bolt interface, upgrade with the DFour91 spider.

Bolt Circle Diameter
Shimano® 4-Arm
Designed for Dura-Ace® R9100 chainrings.
CNC Machined Aluminum Spider, Exogram Carbon Crank Arms
Bottom Bracket
GXP, Press Fit GXP, BB30, Press Fit 30, BBright, BB386EVO, BB30A, PF30A
Q Factor
Wireless Technology
ANT+, Bluetooth low energy technology
CR2032, 200 hours of riding time
Road, Triathlon, CX, Adventure

Features & Benefits

Exogram carbon crank arms.
Bluetooth low energy technology and ANT+ wireless data transfer.
AxCad – no cadence magnet required.
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.
Available technical data:
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