Aprilia
The engine was redesigned again for 1936's Aprilia. The first-series cars used a 1352 cc version with a 72 mm (2.8 in) bore and 82 mm (3.2 in) stroke. Output was 47 hp (35 kW) at 4300 rpm.
A second series was unveiled for 1939 with an enlarged 1486 cc engine. It did not share its predecessor's dimensions, with bore now at 74.61 mm (2.9 in) and stroke at 85 mm (3.3 in). Power output was nearly the same at 48 hp (36 kW).
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