The large IMT tractors 5100/5106 (98 hp) and the turbocharged 5130/5136 (120 hp) were introduced in 1982. The models ending with a 6 were four-wheel drive. The engine was a 5.8-liter six-cylinder made under Perkins license. The transmission was IMT's own 10+2, and the gear levers were, as usual, in the center. Old MF technology was also found in the hydraulic dual pump, whose outputs could be combined if necessary to meet the needs of external hydraulics. The brakes were air-operated. Bosch's electric lift became an optional accessory in 2001.

Many new large models were introduced in the 1990s. The 162-horsepower 5170 was the first IMT tractor to have a differential lock on the front axle. The engine was an unsupercharged 9.6-liter V6 from Mercedes. The transmission was fully synchronized 16+4. In the 170-horsepower class, a 7.4-liter Valmet engine was also later used. A genuine Perkins engine was used in the 136-horsepower 5135 model. A late 1990s innovation is the 210-horsepower 5210, which was technically mostly comparable to the 5170 model.

According to at least GDR sources, IMT's quality was considered among the best of Eastern tractors. However, based on brochures, it seems the manufacturer's ambition was not very high. For example, the brochure used for illustration here is poor in terms of image quality and printing. Technical information is missing, even though headings for it are provided. Many brochures contain basic errors, and the English translations are subpar.

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