No other transmission in the world shifts as fast and smooth as the Twin Disc QuickShift, yet it provides amazing slow speed control at five knots or less. With its patented, completely internal and integrated clutch actuating system, QuickShift instantly delivers cushioned torque to the driveline when shifting from nuetral to anywhere from full ahead to full reverse. It eliminates driveline shock while optimizing power to the driveshaft. And all this happens literally in milliseconds. So you have a steep but smooth power curve, whether you go to full out or just nudge the throttle.