Quarq

DFour91 Power Meter Crankset 110mm Asymmetric BCD GXP to Fit Dura Ace 9100 Chainrings

Quarq's power meter cranks continue to be reliable, accurate and easy to use. The Dfour91 model accepts Shimano Dura Ace 9100 road chainrings and offers more data transfer and frame fit compatibility.

• Designed to only fit Dura Ace 9100 chainrings
• Measures power for both legs with /_ 1.5% accuracy
• Dual Bluetooth lowenergy and ANT wireless data transfer
• AxCad system provides no-magnet cadence data
• Free firmware updates with the QALVIN APP
• Uses a CR2032 battery that can be replaced without tools