Quarq DFOUR91
From 652.40
Quarq DFOUR91
Stages Ultegra R8000 L/R Gen 3
639.00
Stages Ultegra R8000 L/R Gen 3
Quarq Sram Red DZERO
From 608.90
Quarq Sram Red DZERO

Quarq DFOUR91 vs. Stages Ultegra R8000 L/R Gen 3 vs. Quarq Sram Red DZERO

Quarq DFOUR91
Stages Ultegra R8000 L/R Gen 3
Quarq Sram Red DZERO
Quarq DFOUR91

From 652.40

View product
Stages Ultegra R8000 L/R Gen 3

639.00

View product
Quarq Sram Red DZERO

From 608.90

View product

This is what our customers think

Reviews
(6)
(26)
(13)
Pros
-
Dual Sided
Easy To Set Up
Easy to use App
Can split across 2 bikes if necessary.
-
Cons
-
Price
-

According to the product specialist

Pros
This power meter is very precise.
This power meter measures double-sided and therefore gives a good reflection of the delivered power.
With the Shimano chainrings, this power meter fits well with the rest of your group set.
The price-quality ratio of this power meter is very good.
Bluetooth Smart and ANT+ technology makes connecting with other electronics a quick and easy task.
2 separate power meters, which can be used combined or independently.
Precise measurement of the applied power (only +-1,5% deviation)
This power meter measures power output very accurately.
You can adjust the teeth of your chainrings without impacting the measurement.
Cons
This power meter is not suitable for Ultegra 6800 and Dura Ace 9000 chainrings.
You need a new, GXP bottom bracket for this power meter. It does not fit in a Shimano bottom bracket.
The CR2032 batteries cannot be recharged, so they have to replaced every now and then.
This power meter requires a GXP bottom bracket. You might need to replace your bottom bracket.

Specifications

Number of gears
11 speed
11 speed
Measuring Position
Spider
Crank
Spider
Power Source
Battery
Battery
Battery
BCD
130 mm
110 mm
Number of bolts
5
Crankset axle fit
SRAM GXP (24mm)
Shimano Hollowtech II (24 mm)
BB30 (30mm)
SRAM GXP (24mm)
Crank Ratio
No Chainring(s)
Dura Ace R9100 50 / 34
Dura Ace R9100 52 / 36
Dura Ace R9100 53 / 39
Ultegra R8000 46 / 36
Ultegra R8000 50 / 34
Ultegra R8000 52 / 36
Ultegra R8000 53 / 39
50 / 34
52 / 36
53 / 39
No Chainring(s)
50 / 34
52 / 36
53 / 39
Crank Length
170 mm
172.5 mm
175 mm
170 mm
172.5 mm
175 mm
170 mm
172.5 mm
175 mm
Compatible with
Shimano
Shimano
Compatibility
ANT+
Bluetooth
ANT+
Bluetooth
ANT+
Bluetooth
Single-/dual sided
Dual-sided
Dual-sided
Dual-sided
Application
Road
Road
Cyclocross
Gravel
Road
Cyclocross
Gravel
Cadence
Yes
Yes
Yes
Generation
3rd
Colour
Black
Grey
Supports 'Apple Find My'
No
No
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