In 1975, the Lamborghini 754 was introduced, featuring a 72-horsepower 3.6-liter air-cooled engine. The lineup was expanded in the following years with the 82-horsepower 854 and the 67-horsepower 654. In 1979, the 5-cylinder 955 was introduced, which had 92 hp. The most significant difference between these models and the preceding R704/R804/R904 models was the new design and color scheme. Although Same had purchased Lamborghini in 1972, these tractors were still genuine Lamborghinis except for the Same engines.

The transmission was the same fully synchronized 12+3 gearbox used in previous models, which was advanced for its time, but road speeds remained quite low. The clutch diameter was 11 inches, except for the 955, which had a 12-inch clutch. The lifting capacity of 3800 kilograms was quite high, with control performed through the drawbars.

This lineup was the first Lamborghini in which the cab was mounted on rubber mounts. Of course, a model equipped with a roll bar was also available for the Southern European market.

From 1982 onwards, the 754 featured a 4.16-liter engine. Production of the 654 ended at the same time, anticipating the arrival of new models on the market in 1983.

These models were among the first with which Lamborghini began to more broadly conquer export markets. For example, sales started in Germany and England after the mid-1970s. Alongside wheel tractors, Lamborghini also offered crawler tractors based on similar technology. C was the designation for crawler tractors (e.g., C 754), while the designation R was sometimes still used for wheel tractors (e.g., R 754).

The production years of the models are approximate. The tire sizes listed are those used on the German market; larger tires were used in England.

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