Automobile Guide Book 1978/1979'', p. 109 The SS20 is equipped with the T5A engine (first seen in the Jimny), with 539 cc it offered 28 horsepower at 5000 rpm and 5.3 kgm at 3000 rpm, which helped bring top speed up from 105 to 110 km/h (65 to 68 mph).