Every innovation in Quarq’s next-generation DZero platform is channeled into DFour. It embodies 10 years of Quarq technology advances with new features such as dual Bluetooth low energy & ANT+ wireless data transfer the new Qalvin BLE app & compatibility with BB386EVO bottom brackets. ...

Every innovation in Quarq’s next-generation DZero platform is channelled into DFour: 10 years of Quarq advances in power meter technology plus new features such as dual Bluetooth low energy & ANT+ wireless data transfer revised circuitry a new strain gauge design & the new Qalvin BLE app. The DFour chassis pairs with Shimano’s 11-speed Dura-Ace 9000 Ultegra 6800 & 105 5800 chainrings. New DFour 91 is designed for Shimano’s Dura-Ace R9100 chainrings. Both use Quarq’s lightweight sturdy Exogram TM carbon crank arms. GXP & BB30 versions work with every bottom bracket shell including BBright & BB386EVO. If you already have a power meter with an 8-bolt interface upgrade using the DFour or DFour 91 power meter spider. THINGS TO REMEMBERDFour is designed for Dura-Ace 9000 chainrings & compatible with Ultegra 6800 & 105 5800 chainrings.DFour 91 is designed for Dura-Ace R9100 chainrings. Must be paired with a compatible SRAM bottom bracket.8-bolt power meter owners can upgrade using a power meter spider. FEATURES & BENEFITSBluetooth low energy technology & ANT+ wireless data transfer Ax Cad -- no cadence magnet required 10K Temperature Compensation Battery -- CR2032 200-hour battery life change without tools Omni Cal -- swap chainrings without affecting accuracy 2-year warranty IPX7 waterproof rating Accuracy -- within 1.5% measuring both legs. SPECIFICATIONSSpeeds: n/a Crank arm length: 162.5mm 165mm 170mm 172.5mm 175mm 177.5mm n/a BB Compatibility: BB30/PF30-68mm GXP/PF GXP 68mm n/a Chainring

Size: n/a Bolt Circle Diameter (BCD): 110 BCDChainline: 45.0mm BB Spindle Interface: 24mm 30mm n/a Chainring

Material: n/a Guard: No Guard Crank arm

Material: Carbon Colour (Crank arm): Black Power Meter Type: Ant USB





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NEXT-GEN POWER METER FOR SRAM’S VENERABLE GROUPSETBuilt for SRAM’s popular RED groupset & compatible with all of SRAM’s road groupsets the SRAM RED DZero Power Meter embodies 10 years of Quarq’s technology advances & adds new features such as dual a Every innovation in Quarq’s next-generation DZero platform is channelled into DFour: 10 years of Quarq advances in power meter technology plus new features such as dual Bluetooth low energy & ANT+ wireless data transfer revised circuitry a new strain gauge design & the new Qalvin BLE app. The DFour chassis pairs with Shimano’s 11-speed Dura-Ace 9000 Ultegra 6800 & 105 5800 chainrings. New DFour 91 is designed for Shimano’s Dura-Ace R9100 chainrings. Both use Quarq’s lightweight sturdy Exogram TM carbon crank arms. GXP & BB30 versions work with every bottom bracket shell including BBright & BB386EVO. If you already have a power meter with an 8-bolt interface upgrade using the DFour or DFour 91 power meter spider. THINGS TO REMEMBERDFour is designed for Dura-Ace 9000 chainrings & compatible with Ultegra 6800 & 105 5800 chainrings.DFour 91 is designed for Dura-Ace R9100 chainrings. Must be paired with a compatible SRAM bottom bracket.8-bolt power meter owners can upgrade using a power meter spider. FEATURES & BENEFITSBluetooth low energy technology & ANT+ wireless data transfer Ax Cad -- no cadence magnet required 10K Temperature Compensation Battery -- CR2032 200-hour battery life change without tools Omni Cal -- swap chainrings without affecting accuracy 2-year warranty IPX7 waterproof rating Accuracy -- within 1.5% measuring both legs. SPECIFICATIONSSpeeds: n/a Crank arm length: 162.5mm 165mm 170mm 172.5mm 175mm 177.5mm n/a BB Compatibility: BB30/PF30-68mm GXP/PF GXP 68mm n/a Chainring

Size: n/a Bolt Circle Diameter (BCD): 110 BCDChainline: 45.0mm BB Spindle Interface: 24mm 30mm n/a Chainring

Material: n/a Guard: No Guard Crank arm

Material: Carbon Colour (Crank arm): Black Power Meter Type: Ant USB Bluetooth low energy & ANT+ wireless data transfer the new Qalvin BLE app & compatibility with BB386EVO bottom brackets.





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Every innovation in Quarq’s next-generation DZero platform is channeled into DFour: 10 years of Quarq advances in power meter technology plus new features such as dual Bluetooth low energy & ANT+ wireless data transfer revised circuitry a new strain gauge design & the new Qalvin BLE app. The DFour chassis pairs with Shimano’s 11-speed Dura-Ace 9000 Ultegra 6800 & 105 5800 chainrings. New DFour 91 is designed for Shimano’s Dura-Ace R9100 chainrings. Both use Quarq’s lightweight sturdy Exogram TM carbon crank arms. GXP & BB30 versions work with every bottom bracket shell including BBright & BB386EVO. If you already have a power meter with an 8-bolt interface upgrade using the DFour or DFour 91 power meter spider. THINGS TO REMEMBERDFour is designed for Dura-Ace 9000 chainrings & compatible with Ultegra 6800 & 105 5800 chainrings.DFour 91 is designed for Dura-Ace R9100 chainrings. Must be paired with a compatible SRAM bottom bracket.8-bolt power meter owners can upgrade using a power meter spider. FEATURES & BENEFITSBluetooth low energy technology & ANT+ wireless data transfer Ax Cad -- no cadence magnet required 10K Temperature Compensation Battery -- CR2032 200-hour battery life change without tools Omni Cal -- swap chainrings without affecting accuracy 2-year warranty IPX7 waterproof rating Accuracy -- within 1.5% measuring both legs. ...

Quarq’s next generation in power meters DZero combines 10 years of technology advances with new features such as dual Bluetooth low energy & ANT+ wireless data transfer the new Qalvin BLE app & for the carbon version compatibility with BB386EVO bottom brackets. ...

A DECADE OF INNOVATION PLUS NEW FEATURESQuarq’s next generation in power meters DZero combines 10 years of technology advances with new features such as dual Bluetooth low energy & ANT+ wireless data transfer the new Qalvin BLE app & for the carbon version compatibility with BB386EVO bottom brackets. ...

A DECADE OF INNOVATION PLUS NEW FEATURESQuarq’s next generation in power meters DZero combines 10 years of technology advances with new features such as dual Bluetooth low energy & ANT+ wireless data transfer the new Qalvin BLE app & for the carbon version compatibility with BB386EVO bottom brackets. ...

Quarq’s next generation in power meters DZero combines 10 years of technology advances with new features such as dual Bluetooth low energy & ANT+ wireless data transfer the new Qalvin BLE app & for the carbon version compatibility with BB386EVO bottom brackets. ...

Quarq’s next generation in power meters DZero combines 10 years of technology advances with new features such as dual Bluetooth low energy & ANT+ wireless data transfer the new Qalvin BLE app & for the carbon version compatibility with BB386EVO bottom brackets. ...

A DECADE OF INNOVATION PLUS NEW FEATURESQuarq’s next generation in power meters DZero combines 10 years of technology advances with new features such as dual Bluetooth low energy & ANT+ wireless data transfer the new Qalvin BLE app & for the carbon version compatibility with BB386EVO bottom brackets. ...