SRAM Quarq DFour91 spider 110mm

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  • Quarq DFour91 Power Meter Spider

    Make the most of your Shimano Dura-Ace R9100 groupset by upgrading to Quarq’s DFour91 power meter, which embodies all the advances of the next-generation DZero platform.


    • 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.
    • 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 chainrings. If you already have a power meter using the 8-bolt interface, upgrade with the DFour91 spider.

    Essential Details

    • Designed for Dura-Ace R9100 chainrings.
    • Only 8-bolt power meter owners can upgrade using the DFour91 Power Meter Spider.


    • Bolt Circle Diameter: Shimano 4-Arm
    • Compatibility: Designed for Dura-Ace R9100 chainrings.
    • Material: CNC Machined Aluminum Spider
    • Accuracy: 1.5%
    • Wireless Technology: ANT+, Bluetooth low energy technology
    • Battery: CR2032, 200 hours of riding time
    • Discipline: Road, Triathlon, CX, Adventure
    • Weight: 154g

    Why not save some watts?

    More Information and Manuals

    Bottom Bracket Standards

  • Matching chainrings for DZero, DFour, DFour91, Red DZero:
    110mm 50T. 52T.
    110mm 36T. 34T.
    130mm 53T.
    130mm 39T.
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    Factory number:00.3018.191.000
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