QuickShift® : So FAST,
so SMOOTH, you've got
to FEEL it to BELIEVE it

No other marine transmission in the world shifts as fast and smooth as the new 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 neutral to anywhere from full ahead to full reverse. It eliminates driveline shock while optimizing power to the driveshaft. And all this happens literally within milliseconds. So you have a steep but smooth power curve, whether you go full out or just nudge the throttle.

Smooth, seamless shifts and instant power to the propeller.
It’s difficult for a powerful diesel vessel to go very slowly with a conventional transmission. Reducing engine rpms to get the vessel speed below five knots could stall the engine. Not so with QuickShift®. It regulates engine torque at extremely low speeds to slow propeller speed down to approximately 100 rpms – allowing you to maneuver at less than 5 knots and even accomplish zero boat speed, an incredible advantage in docking.

QuickShift® is truly the only slow speed system that can be effectively used for docking and maneuvering.
Docking under calm conditions can be a challenge with a conventional transmission. In the time it takes to shift from forward to reverse, boats traveling five knots can drift up to 13 feet. With QuickShift®’s immediate thrust and slow speed control, the movement of the vessel is contained more precisely and easily.

Motor Boating magazine has singled out QuickShift® to receive its 2003 Editor’s Choice Award, calling our technology “an exciting breakthrough in slow-speed control for diesel-powered boats” that delivers “what trolling valves and two-speed transmissions can’t: propeller speeds as low as 50 rpm.”