The Zetorin UR I series was introduced in 1960 but only went into production in 1962. There were three models with SAE power ratings of 25, 38, and 52 horsepower. The UR I was quite technically advanced for its time: standard features included, among others, a 10+2 gearbox, dual clutch, a wide range of gauges, a differential lock, hydraulically operated brakes, a weight transfer system, and a separate valve for external hydraulic use. As an optional extra, a factory-installed cab and a compressor were available. To use the steering brakes, a lever was used to select whether both, the right, or the left brake was engaged. There were six power take-off speeds available for local use. Additionally, a front power take-off was standard.

There were also four-wheel-drive versions of the 3- and 4-cylinder models, although these were not imported into Finland. The production range also included models with half and full frames. The series was produced in both blue and red colors. In Finland, the blue ones were more common. The 3011 received a rating of Very Poor for durability in the Vakola test report. Sales success in Finland also remained a fraction of previous models.

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