QED Lightweight Split Chainring
Training and promotion happen over a professional rider's career. With excellent mechanical quality and the exquisite balance between weight and rigidity, QED series can cope with the stringent demand for equipment during training or competition, and let riders feel the power of mechanical properties all the time.
QED P505 Power Meter
Description: Exploring more efficient power transmission has never been easier. The QED P505 power meter provides a more accurate and advanced algorithm with ±1% power accuracy, to keep riders’ rhythm in control during training and competition. Professional-grade stiffness and smooth shifting performance bring riders an extremely comfortable riding experience, helping riders accelerate faster and enjoy the passion brought by riding acceleration.
QED P325 Power Meter
QED P325 power meter stands out for its precise, smooth shifting and excellent transmission efficiency and reliable stiffness. With the DUB spindle compatible with most bottom bracket shells, it’s easy to install and use. The ±1.5% data accuracy helps riders explore and reach their goals at all times, regardless of the weather.
QED Crankset for Road Bike
Training and promotion happen over a professional rider's career. The QED crankset has excellent mechanical quality and the optimal balance of weight and rigidity. Perfectly cope with the stringent demand for equipment during training, feel the cycling tension brought by the power at all times.
QED Lightweight Split Chainring
Training and promotion happen over a professional rider's career. With excellent mechanical quality and the exquisite balance between weight and rigidity, QED series can cope with the stringent demand for equipment during training or competition, and let riders feel the power of mechanical properties all the time.
QED P505 Power Meter
Description: Exploring more efficient power transmission has never been easier. The QED P505 power meter provides a more accurate and advanced algorithm with ±1% power accuracy, to keep riders’ rhythm in control during training and competition. Professional-grade stiffness and smooth shifting performance bring riders an extremely comfortable riding experience, helping riders accelerate faster and enjoy the passion brought by riding acceleration.
QED P325 Power Meter
QED P325 power meter stands out for its precise, smooth shifting and excellent transmission efficiency and reliable stiffness. With the DUB spindle compatible with most bottom bracket shells, it’s easy to install and use. The ±1.5% data accuracy helps riders explore and reach their goals at all times, regardless of the weather.
QED Crankset for Road Bike
Training and promotion happen over a professional rider's career. The QED crankset has excellent mechanical quality and the optimal balance of weight and rigidity. Perfectly cope with the stringent demand for equipment during training, feel the cycling tension brought by the power at all times.
Which one suits you？
Use the following parameters to compare and determine which one is more suitable for you.
QED Crankset
QED P325 Power Meter
QED P505 Power Meter
Crank length
175mm
172.5mm
170mm
167.5mm
165mm
175mm
172.5mm
170mm
167.5mm
165mm
175mm
172.5mm
170mm
167.5mm
165mm
Tooth
53-39/52-36/50-34
53-39/52-36/50-34
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Weight(g)
697 (53-39T)
694 (52-36T)
680 (50-34T)
694 (53-39T)
691 (52-36T)
677 (50-34T)
690 (53-39T)
687 (52-36T)
673 (50-34T)
686 (53-39T)
683 (52-36T)
669 (50-34T)
682 (53-39T)
679 (52-36T)
665 (50-34T)
A tolerance of ±2% applies to the weight
712 (53-39T)
709 (52-36T)
695 (50-34T)
709 (53-39T)
706 (52-36T)
692 (50-34T)
705 (53-39T)
702 (52-36T)
688 (50-34T)
701 (53-39T)
698 (52-36T)
683 (50-34T)
697 (53-39T)
694 (52-36T)
680 (50-34T)
A tolerance of ±2% applies to the weight
Without chainring
636.2
633.2
629.2
625.2
621.2
A tolerance of ±2% applies to the weight
Spindle
DUB
DUB
DUB
Compatible system
DUB bottom bracket, Shimano & Sram 9-12 speed system
DUB bottom bracket, Shimano & Sram 9-12 speed system
DUB bottom bracket, Shimano & Sram 9-12 speed
Compatible chainring
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SHIMANO: 110BCD 4-arm chainring
SRAM，ROTOR，FSA，etc.:110BCD 5-arm chainring.
Q-factor
147mm
147mm
147mm
Chainline
45mm
45mm
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Power accuracy
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±1.5%
±1%
Power range
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0-2500W
0-2500W
Cadence range
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20-240RPM
20-240RPM
Data function
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Power, cadence, left-right balance, torque effectiveness, pedaling smoothness
Power, cadence, left-right balance, pedaling smoothness
Calibration
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Manual calibration
Manual calibration， auto-calibration, backpedaling calibration
Wireless protocol
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ANT+,Bluetooth
ANT+,Bluetooth
Battery life
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Rechargable Lithium battery / 200 hours
Rechargable Lithium battery / 200 hours
Waterproof
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IPX7
IPX7