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    SRAM Quarq Power Meter DFour Spider

    Item no.:

    Product weight:154g
    597,50 € UVP: 779,00 €
    You save 23,3 %, that is 181,50 €
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    Article details

      SRAM Quarq Power Meter DFour Spider

      For the past 10 years Quarq developed performance measurement systems for athletes who want to leave nothing to chance in training. In the DZero PowerMeter platform Americans could incorporate all their experience and integrated the latest technical standards.

      The DZero PowerMeter continue to rely on a spider-based performance measurement. Since this system performance measures there where it is rendered and the power is measured by both legs, this system ensures a very high accuracy. Externally changed only in detail, the DZero PowerMeter but have a completely redesigned interior. Not only the instrumentation is new, even the arrangement of the strain gauges has been further optimized. The result is an even more accurate power measurements at every stage of a turn of the handle and an improved measurement accuracy in temperature. Thus, the values must be less corrections via the internal software. Another important new feature is the data transmission via Bluetooth Low Energy standard, in addition to transmitting the ANT + standard. Thus, the DZero PowerMeter can be paired with almost all available in the market cycle computers and smartphone apps. To upload firmware updates and perform system diagnostics, Quarq has developed the Qalvin app for IOS and Android.

      The Quarq DFour PowerMeter Spider adapted 9000 chainrings from design to Shimano Dura Ace. Thus, the DFour PowerMeter 9000 Group adds optically perfectly into racing wheels with Dura Ace.

      Good is the Spider for Sram PowerMeter Cranks with 8 screws Spider mount.


      - 10K Active Temperature Compensation
      - Wireless data transfer via Bluetooth low energy or ANT +
      - Chainring change not require recalibration have no influence on the measurement accuracy
      - Cadence measurement via accelerometers (no additional magnet required!)
      - Waterproof construction IPX7 standard
      - LED power indicator always informed of battery level
      - 200 hours time (tool-free battery replacement by CR2032 Standard)

      - Power Balance
      - +/- 1.5% accuracy

      Technical specifications:

      Material Spider: aluminum
      PCD: 110 mm, asymmetrical
      Compatibility chainrings Shimano 11-speed (except R9100), designed for Dura Ace 9000
      Technology: Quarq Power Meter
      Crank arm: 165; 170; 172.5; 175 or 177.5 mm
      Chainrings: without
      Color: Black

      Weight (without bottom bracket and chainrings; manufacturer): 154g

      Delivery: 1x Quarq Power Meter DFour Spider without Kurbearme without chainrings, without bottom bracket.

      Note: Please follow the instructions for battery regulation .

      Product weight:154g