Quarq DFour DUB Power MeterSeptember 20, 2023
$429.00 – $640.00
For Shimano users that want to step-up their game and start training with power!
Quarq DFour DUB Power Meter
The Quarq DFour DUB Power Meter is designed for users of a Shimano crankset that want to step-up their game and start training with power! Featuring a 110 BCD, 4-bolt configuration, the DFour accepts all Shimano road chainrings. However, it is ideally suited for DURA-ACE 9100 rings specifically (for cosmetic purposes). This power meter benefits from over 10 years of Quarq’s experience in power meter technology. Therefore, it is accurate, durable and consistent in all conditions. It also has features such as MagicZero (automatically offsets) and 10K Temperature compensation (stays accurate regardless of temperature changes).
The DZero platform is now combined with SRAM’s new DUB technology. This means easy part choices, quality materials and a broader selection for bottom brackets and chainrings. The power meter runs for 200 hours on a single CR2032 battery and comes with a full 2-year warranty.
Key Product Details
This power meter fits SRAM RED, SRAM Force and Quarq DZero 8-bolt crank arms. It fits both the DUB or GXP versions. It ships with Quarq DZero crank arms unless otherwise specified. Regarding chainrings, it is designed for Shimano DURA-ACE 9100 chainrings. Shimano Ultegra R8000 and 105 R7000 rings also work, however they will not match the shape or color of the power meter as nicely. See Compatibility tab for more information.
The Quarq power meter measures power at the spider and is therefore able to measure power from both legs.
Dual-leg power measurement, accurate to +/- 1.5%, lightweight carbon crank arms, 200 hours of battery life, CR2032 user-replaceable battery, ANT+ and Bluetooth compatibility, auto-zero (automatic calibration). See Specs tab for more information.
Advice From Our Staff:
We are big fans of Quarq power meters. They benefit from close to 15 years of Quarq’s experience in power meter technology. It measures power from both legs, is accurate and reasonably priced. Please note, it requires the use of a SRAM DUB bottom bracket.
Options For This Power Meter
Crank arms: You can purchase the power meter with or without crank arms. Available crank arms are:
- 165 mm | 167.5 mm | 170 mm | 172.5 mm | 175 mm
DZero DUB – These are the crank arms that are pictured above and will ship with the power meter unless otherwise specified (they require a SRAM DUB bottom bracket). Unless you need GXP or higher-end SRAM RED crank arms, these are the ones we recommend.
Force GXP – If would like to use a GXP bottom bracket on your bike (Trek BB90 for example), the SRAM Force GXP Crank Arms will work perfectly. Please select ‘No crank arms’ on this page and then add Force GXP Crank Arms to your shopping cart.
RED DUB or GXP – If you are looking for the best SRAM has to offer, the SRAM RED Crank Arms are it (available in both DUB and GXP). The RED cranks are lighter (by about 140 grams) and stiffer than the DZero and Force arms. If you would like to order the power meter with SRAM RED cranks, please select ‘No crank arms’ on this page and then add the SRAM RED Crank Arms to your shopping cart.
Other Versions to Consider
DZero: The DFour you are viewing here works with 4-bolt Shimano chainrings, however if you want to use 5-bolt chainrings, we have the Quarq DZero DUB Power Meter.
Crank arms: The Quarq DFour DUB Power Meter spider fits SRAM RED, SRAM Force and Quarq DZero crank arms. It fits both the DUB or GXP versions. The power meter ships with the Quarq DZero crank arms unless otherwise specified.
Chainrings: The power meter is designed for use with Shimano DURA-ACE 9100 chainrings. Shimano Ultegra R8000 and 105 R7000 rings will also work, however they will not match the shape or color of the power meter as nicely.
The power meter is compatible with Shimano 12-speed chainrings such as DURA-ACE 9200, Ultegra R8100 and 105 R7100, however, they don't match the shape of the power meter spider as nicely. Please see the Questions tab for more information.
Quarq DFour DUB Specs
|Name||Quarq DFour DUB Power Meter|
|Location of Power Measurement||Spider|
|Left or Both Legs Measured||Both|
|Independent Left/Right Measurement||Power Balance|
|Installation||More involved (60 min. estimated)|
|Crank Arm Material||Carbon|
|Communication Protocol||ANT+ and Bluetooth SMART|
|Claimed Accuracy||+/- 1.5%|
|Active Temperature Compensation||Yes|
|Weight||Spider: 165 grams / Cranks: 482 grams|
|Battery Life||200 hours|
|Method of Cadence Measurement||Accelerometer|
|BCD||110 5-bolt or 130 5-bolt|
|Spindle Size||DUB 29 mm or GXP 22/24 mm|
In the Box
- Quarq DFour DUB Power Meter
- Quarq DZero DUB Crank Arms (if purchased)
- Set of Torx T20 Bolts
- Set of Chainring Bolts - Threaded
- CR2032 Battery
Tools Needed for Installation
You will need the following tools for installation of this product. You can purchase many of these commonly used tools in our store.
- 8 mm Allen key
- T20 Torx bit
Common Questions and Answers
Question: Is the Quarq DFour Power Meter compatible with Shimano 12-speed chainrings?
- Yes, you can install Shimano 12-speed chainrings on this power meter, however the shape of the chainrings does not match the power meter (please see the image below which shows the power meter with Shimano DURA-ACE 9200 chainrings). This is a cosmetic issue only, but we understand this is important to customers.
Question: What Shimano chainrings are compatible with the DFour power meter?
- This power meter is designed for use with Shimano DURA-ACE 9100 chainrings. Please see our article for more information: What Shimano chainrings are compatible with the Quarq DFour power meter?
Question: Can I use oval chainrings on the Quarq DFour power meter?
- Yes you can! We have both ROTOR and absoluteBlack oval rings that look and work really well with the DFour. Please see our article for more information: Can I use oval chainrings on the Quarq DFour power meter?
Question: Can I use this power meter on my Shimano road crankset?
- The Quarq DFour is designed for users of a Shimano crankset that want to add a power meter. It uses a 110 BCD, 4-bolt spider so you can use your Shimano chainrings on it. However, it does require that you change your Shimano cranks for Quarq cranks. Please see our article for more information: Can I use the Quarq DFour DUB Power Meter Spider on my Shimano road crankset?