APRC Aprilia AQS system Aprilia Quick Shift

For ultra-fast electronic gear shifting without closing the throttle or using the clutch. When you're after the fastest possible lap performance, you can't afford to waste even one thousandth of a second in an apparently simple operation like shifting gears. The RSV4 APRC features an electronic gear shifting system known as Aprilia Quick Shift which delays spark advance for an instant and then gradually restores it, making for super-fast shifting with no need to close the throttle or use the clutch.