In 1966, the Super series replaced the S series. All models now featured a steering column gearshift. The engine displacements were larger in most models compared to their predecessors. The 4-cylinder S 650 was replaced by a 6-cylinder Super 650, and the 3-cylinder S 450 by a 4-cylinder Super 500. The lifting capacities were greater than before. Other technical aspects and the appearance remained almost unchanged.

For the year 1968, the lineup was modified slightly. The 400 and 500 were replaced by versions with numbers 50 units higher. Additionally, the 550 S was introduced, whose transmission and hydraulics were taken from the larger 650 model. The 550 S and 600 models could be equipped with a turbine clutch. Alongside the rollover bar and soft-top cab, Schlüter's own Traktomobile cab was made available. In 1970, the fenders became angular.

Between 1969 and 1971, engines in various models were updated to the newer SDM series, resulting in a slight increase in power and displacement. Technical specifications for these versions are not included in the table.

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