The factory in Trstena manufactured the first five test LKT-75 trailer tractors, which marked the beginning of a new history of the LKT brand focused on manufacture of machinery for mechanisation of forestry works.

The LKT 75 was the first forestry trailer tractor designed and manufactured in the countries of Central and Eastern Europe. It had a simple construction and it was renowned for its reliability. The construction design of the steering of the tractor based on turning the front and the back frame with fixed axles and unsteered wheels turned out to be very effective and later became the basis for the construction of practically all of the LKT machines.