QUARQ DFour91 Carbon Power Meter Chassis Crank - GXP

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Description of QUARQ DFour91 Carbon Power Meter Chassis Crank - GXP

Quarq has extended its DZero power meter platform, adding a chassis for Shimano®’s Dura-Ace® R9100 chainrings.

The power meters are built on Quarq’s DZero platform. They embody 10 years of advances in power meter technology, plus features such as dual Bluetooth low energy and ANT+ wireless data transfer, Quarq’s latest measurement circuit, and the Qalvin BLE app. Riders also get AxCad accelerometer cadence, the easy-to-replace CR2032 battery and an IPX7 waterproof rating.

Features of Quarq DFour91 Powermeter for Dura Ace R9100

  • Designed for Dura-Ace® R9100 chainrings.Compatible with Ultegra® R8000 chainrings.
  • Must be paired with a compatible SRAM bottom bracket.
  • 8-bolt power meter owners can upgrade using the DFour91 Power Meter Spider.
  • Accuracy: 1.5%
  • Wireless Technology: Dual Bluetooth Low Energy and ANT+
  • Battery: CR2032, 200 hours of riding time
  • Weight: 594g (172.5mm, GXP, chassis only)

Qalvin BLE with Bluetooth®

For iOS and Android. With any phone you can set zero offset, check battery, run diagnostics and update firmware. Free.


The Hollow Carbon Construction starts in the crank arm and extends into the crank’s spider, maximizing the stiffness to weight ratio.
Included in delivery: without bottom bracket cups and chainrings
Material: crank arms: Exogram Hollow Carbon
spider: CNC machined aluminium
Recommended Bottom Bracket: GXP, Press Fit GXP
Weight supplement: 172.5 mm, GXP, chassis only manufacturer information
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Fact Sheet of QUARQ DFour91 Carbon Power Meter Chassis Crank - GXP

Product Name: QUARQ DFour91 Carbon Power Meter Chassis Crank - GXP
Manufacturer: QUARQ
Item Code: QRQ334579
activity: Bike
material: Carbon
usage bikesport: Road Bike
crank arm length: 165, 170, 172,5, 175
shifting system: 10-speed, 11-speed
bottom bracket axle profile: 24mm Hollow Shaft, GXP 22/24mm
Road - bolt circle diameter: 110 mm, asymmetric, 4 armmm
chainring mount: 2-speed
crank special features: Power Meter
Model year: 2019
Color: Black
weight: 594g
manufacturer item code: 165mm: 00.3018.192.165
170mm: 00.3018.192.170
172,5mm: 00.3018.192.172
175mm: 00.3018.192.175
Manufacturer page: http://www.quarq.com/
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Selection: QUARQ DFour91 Carbon Power Meter Chassis Crank - GXP
Still 1 in stock in stock, delivery time 12-14 days Crank arm length 177.5mm
  • Description
  • Fact Sheet
  • Availability**
  • Ratings (3)


(3 Ratings)
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Customer Reviews
Das ist schon meine zweite Quarq Kurbel.
Passt in die meisten Rahmen. Ich habe meine erste immer hin und her montiert.
BB30 Kurbel mit Dura Ace Blätter! Schaltqualität auf höchstem Niveau, megasteif, super leicht!
Batterietausch, 1x Jahr / 6000km. Batteriefach vorne an der Kurbel aufschrauben, tauschen fertig!
Meine beiden Kurbeln messen fast identisch, ±2 Watt. Mega Top!
Erste Kurbel ist seit 3 Jahren im Einsatz ganzjährig bei jeden Wetter. Problem = 0!
In einem Satz. Für mich die beste Kurbel am Markt zum Top Preis!!
Truly awesome
I bought this powermeter due to reading extremly good reviews on the internet. I can only confirm this. THe Quarq reads power within +/- 2-4 watts of my NEO2. It's really spot on.

I have the Dfour91 and it looks so cool with Shimano chainrings. I used the BB30 version on my BBright BB on my Cervelo. I get PERFECT chainline.


PS - nothing can beat a crankbased powermeter! If you want solid, accurate and always reliable data; then don't bother pedal powermeters. Go for crankbased since they are much less prone to "power-parasitics".
pay attention of smaller chainring (dura ace 9000 instead of 9100)
powermeter works very good as usual.

one important thing: smaller chainring must be dura ace 9000 series, not 9100 as expected.

only bigger chainring obiously must be dura ace 9100 seriers.

Bike24: Dear customer, we have checked your technical recommendations ourselves and cannot confirm them. On the small chain ring both the Dura Ace 9000, as well as the Dura Ace 9100 chainrings fit. The chainrings are identical except for a small detail, but both do fit very well. Thank you and have a good ride.
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