Quarq DFour91 Spider Assembly 8-Bolt 110 BCD Power Meter

 
£ 660.00 - £ 660.00

£ 660.00

The Quarq's powerful DFour91 Spider Assembly 8-Bolt 110 BCD Power Meter is the perfect companion whilst you train. Fitted with the efficient AxCad and Power Balance this power meter offers accurate and improved data collection when it comes to synchronised measurements of cadence and left-right wattage. Removing the need for magnets, this power meter is an excellent alternative for bikes where it is difficult to install magnets.

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The Quarq's powerful DFour91 Spider Assembly 8-Bolt 110 BCD Power Meter is the perfect companion whilst you train. Fitted with the efficient AxCad and Power Balance this power meter offers accurate and improved data collection when it comes to synchronised measurements of cadence and left-right wattage. Removing the need for magnets, this power meter is an excellent alternative for bikes where it is difficult to install magnets.

Read full description

Quarq DFour91 Spider Assembly 8-Bolt 110 BCD Power Meter

Power meters are essential to get the most out of your training to help quantify your workouts. Which is why when it comes to power meters Quarq's powerful DFour91 Spider Assembly 8-Bolt 110 BCD Power Meter is the excellent companion for those who live to be challenged and pushed.

Twinned with AxCad and Power Balance technology this Dfour91 Spider Assembly Power Meter proves to be the most efficient power meter with improved accuracy and durability. Eliminating the need for magnets AxCad and Power Balance enables excellent accuracy and efficiency in synchronised measurements of cadence and left-right wattage. A great alternative and convenience for bikes where is difficult to install a magnet.

The use of OmniCal tech and 10K Active Temperature Compensation removes any software hassle making this one of the easiest and convenient power meter assemblies. Offering improved accuracy over a wider range of conditions, the 10K Active Temperature Compensation uses more than 10,000 data points eliminating any needed software change when it comes to temperature differences. Whilst OmniCal's independent power measurement maintains accuracy when changing chainrings, leaving you more time to hit the roads.

Designed with an IPX7 waterproof rating and 2-years warranty this power meter assembly is sure to put a smile on your face. With it's 200-hour battery life you can go on longer rides with less worry; using CR2032 batteries, the battery is changeable without the need for tools.

With the use of Qalvin, Quarq's digital wrench, you can maintain this power meter at ease, with free firmware updates, battery readings, calibrations and diagnostics. Offering great compatibility the Dfour91 Power Meter has the ability to connect via ANT+ or Bluetooth.

Essential Details

  • Variations include Hidden Bolt (HB), Non-hidden Bolt (NHB).
  • Use the HB versions for Quarq Prime cranksets.
  • Pairing a HB version and SRAM chainrings will align the chain derailment pin and crank arm.
  • NHB versions work with traditional 5-bolt chainrings from most manufacturers.
  • Uses the 8-Bolt crank to spider interface.
  • Existing power meter owners can upgrade to a DZero spider if the power meter uses the 8-bolt interface (see below)

8-Bolt Compatibility

Power meters and cranksets on 8-bolt since release:

  • Quarq ELSA RS (Aug ’14)
  • Quarq RIKEN AL (Apr ’15)
  • Quarq Prime Power Ready Cranksets (Mar ’16)
  • SRAM RED Power Ready Cranksets (Mar ’16)
  • SRAM XX1 Power Meter (Aug ’14) (Note: Boost spiders should not be paired with 156Q crank arms)
  • SRAM RED BB386EVO standard crankset (Mar ’16)

Power meters switched to 8-bolt:

  • Quarq RIKEN R (Revision AEQ onward, except warranty/replacement – Jul ’15)
  • SRAM RED (eTap graphics – Jan ‘16)

Incompatible products:

  • Quarq ELSA R
FEATURES
  • Bluetooth low energy technology and ANT+ wireless data transfer
  • AxCad – no cadence magnet required
  • 10K Temperature Compensation
  • Battery – CR2032, 200-hour battery life, change without tools
  • Power Balance
  • OmniCal – swap chainrings without affecting accuracy
  • 2-year warranty
  • IPX7 waterproof rating
  • Accuracy – within 1.5%, measuring both legs
  • Free firmware upgrades with the Qalvin app

PRODUCT REF: 752257

UK Delivery Options

STANDARD Delivery £1.99

Free - spend over £30.00

Estimated delivery within 4 working days.

 
click and collect with collect+ £1.99

Have your order delivered to your local shop for just £1.99! For Highlands and Islands, please allow up to 5 working days. Orders can be shipped to UK Collect+ locations specified on the SigmaSports.com website where they will be held awaiting collection for a period of 10 days.

Orders are normally dispatched within 2 working days.

 
Priority 1st Class Delivery £2.99

Estimated delivery within 2 working days. For Highlands and Islands, please allow up to 5 working days.

 

Next Working Day Delivery £4.99

Tracked delivery with 1-hour delivery window. Order before 3pm for weekday dispatch. Weekday delivery only, excluding Bank Holidays. Orders placed after 3pm will be dispatched the next working day.

Next Working Day delivery is only available on items in stock in our warehouse and excludes pre-order items. Next Day refers to the next working day, Bank Holidays will add an extra working day to the estimated delivery lead times. UK next day excludes Saturday deliveries. This service is not available to some remote postcode areas. Please contact us for help.

 
Saturday pre-12pm Delivery £4.99

Saturday delivery orders must be placed by 1pm Friday and are only available on items in stock in our warehouse. Orders are prioritised through our warehouse and are delivered on Saturday pre 12pm by courier. Package must be signed for upon delivery.

 

Sunday pre-12pm Delivery £4.99

Sunday delivery orders must be placed by 1pm Friday and are only available on items in stock in our warehouse. Orders are prioritised through our warehouse and are delivered on Sunday pre 12pm by courier. Package must be signed for upon delivery.

 
Reserve and Collect - FREE

Reserve & Collect from either our Sigma Sports store in Hampton Wick or our Collection Point in Esher. Just select the Reserve & Collect button in the basket. Please note that bikes orders will require a 10% deposit before we build your bike. We will contact you for payment after you've placed your order.

Reserve and Collect Collections - Clothing, parts and accessories: Next day. Orders placed on Friday, Saturday or Sunday will be available for collection after midday on the Monday (excluding Bank Holidays). Bikes: 72 hours if in stock at our store, collect in up to 7 days (sometimes quicker) if in stock at our warehouse. Please note that bikes orders will require a 10% deposit before we build your bike. We will contact you for payment after you've placed your order.

 
London Same Day (Order Before 1pm)

We offer a Same Day delivery service into London. The cost is £25.00 under 2Kg and £35 over 2Kg. Place your order before 1pm, deliveries are made Monday to Friday. Please note this option excludes bicycles.

 
Bike Deliveries - FREE)

All our bikes are fully checked and tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for despatch. All you have to do is add the pedals, rotate and tighten the handlebars. Typically we can deliver your bike in 7 - 9 working days. Kids Balance Bikes can be dispatched immediately.

Deliveries are made Monday to Friday during normal business hours. One of our customer service team will be in contact to arrange a convenient day for delivery.

More information on all our UK delivery options.

Free UK Returns

We offer free 90-day returns and exchanges for UK customers. Sigma Sports will happily refund or exchange any item purchased at Sigma Sports.

More information on the Sigma Sports returns procedure.

European & Worldwide delivery

We ship to a wide range of countries, using DHL. This is a fully tracked service and a signature will be required. Please note, our dispatch time for in-stock items is 2 working days.

All our bicycles are fully checked and tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for delivery. Typically we can deliver your bike in 7 - 9 working days.

 
Delivery Information

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