The first Evoluzione cars were built at the end of 1991 and through 1992. These were to be the final homologation cars for the Lancia Rally Team; the Catalytic Evoluzione II (below) was never rallied by the factory.
In order to improve the handling, the Evoluzione I had a wider track front and rear than earlier Deltas. In order to enclose this track in the bodywork, the wide arches were extended even further and in the process also became more rounded. The wings were now made in a single pressing, whereas previously they had been fabricated. The front strut top mounts were also raised, in the quest for more grip: this then necessitated a front strut brace to control the forces thus generated.
