High performance and an angular shape – these are the properties that best encapsulate the tractor model range which fittingly bears the name crystal.
Development of a new Unified Range II started at the Brno plant in 1964. The
first models of the new range drove off the production line after several years
of development in 1969, and were named the Zetor 8011 Crystal. These 80 hp
tractors with a four-cylinder engine pioneered an all-new generation of more
powerful agricultural machines.
In its launch year, Crystal received several prestigious awards at SIMA, the Paris international agricultural show. The trade fair organizers and target customers appreciated both the unique “crystal” design (created by Otakar Diblík, a designer who was fond of crisp lines) and its technical equipment, which was very modern for the time. The new model range boasted the first safety cab with integrated roll-over stability control, located on silent blocks.
The new Crystal 12011 was introduced in 1975. This was the first six-cylinder model, which was also available in a 4×4 version. In 1981, ZETOR relocated its production of heavy tractors to the state-owned company ZTS in Martin, Slovakia.