After the war, Maserati raced both the 8CL and 4CL. Right before the Maserati brothers left the firm they created, they helped design a new Inline-6 engine aimed at formula II racing. This engine provided a basis from the A6 and the sports race cars that followed it.
While the engine had debuted in Maserati‘s first road car, it was quickly adapted for competition use. Officially known as the ‘2000 Sport’, the new Maserati sports racer was much known as the A6GCS. The first A6GCS sported a coupe body but this was quickly abandoned in a favour of a much lighter ‘siluro’ or cycle fender body, created for Maserati by Medardo Fantuzzi. One of the design’s most recognisable features was a single headlight (monofaro) mounted in the grille.
The A6GCS was campaigned by the works team and also offered to customers. Development on the car was continuous, so no two were exactly alike. Among the first changes was the adoption of an alloy cylinder block and to the final models dry-sump lubrication was also fitted. The very last car sported a twin-cam cylinder head that had been developed for the A6GCM Formula 2 racer.
Eventually little over a dozen of the original A6GCS were produced before it was replaced by the A6GCS/53.