Transfluid power shift transmissions are available in one, two or three speeds forward and one or two speeds reverse. Designed for heavy duty applications, it provides quick and smooth reversing and easy gear selection on the go. Consisting of a double gear train, actuated by integral hydraulic clutches, it connects to the engine through a wide range of torque converters. Torque converters are selected to optimize the driven machine performances. Additionally, it eliminates the mechanical connection between the engine and the driven machine allowing smooth power transfer. The hydraulic clutches are operated by a hydraulic selector, electrically actuated, with built-in a patented “soft shift” device.