Power on every ride. We have taken the reliability, elegance, and features of Quarq's legendary spindle-based power meter and lowered the entry barrier even further. This new power meter platform is fully housed in the DUB spindle for a clean integration that fits more bikes than ever before. It is an invisible technology that adds minimal weight and helps you reach your destination faster. The spindle-based DUB-PWR unit measures power on the left side to calculate the total wattage.