Quarq DZero Powermeter Spider for Specialized, 110mm BCD, Spider Only

Quarq's power meter technology is reliable, accurate and easy to use. Now available as a spider by itself as an easy upgrade for existing cranks. The DZero series offers improved data transfer and frame fit compatibility.

• Compatible with these power meter cranks: Quarq Elsa RS, Quarq Riken Al, Quarq Riken R (produced July 2015 and later), SRAM XX1, 2016 and later SRAM Red power meter cranks (Red eTap graphics)
• Compatible with these non power meter cranks: Quarq Prime and SRAM Red BB386EVO
• Not compatible with Quarq Elsa R cranks
• 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