In addition to lorries, the chassis was bodied as fire engines, mobile shops and small buses by coachbuilders.

The old-fashioned looking cabin of the KB-24 was modernised in the KB-124 and made more spacious to make it competitive with the Volvo Snabbe.

In 1971 the state chose buying 53 Fargos for a total of 1.2 million marks; the minister of transport, Kalervo Haapasalo, commented that the domestic vehicle production was "small-time business".

[2] At the beginning the engine selection consisted the same models which were used in the previous KB-24:[1] the utterly outdated, in-house produced four-cylinder 3.5-litre Sisu AMA side valve petrol engine with an output of 70 hp,[7] and four-cylinder 3.6-litre Ford Dagenham diesel with the same output.

[4] The clutch with 280-millimetre (11 in) diameter is dry single-plate type and features torsional damping.

The gearbox includes four speed forward and reverse; the second, third and fourth gear are with synchromesh.

[4] The forged front axle beam is I-profile shape and there is a drop in the middle.

[10] Suspension is carried out by leaf springs 1,200 millimetres (47 in) long and 2.5 inches (64 mm) wide.

[4] The full-steel cabin used on lorry models represents own production of SAT.

[4] The platform width of 1.85 metres (6 ft 1 in) was good for agility, but became problematic when standard pallets became more common.