Looking for the next gap in the market, Rivolta realised that the production facilities at his Milan plant were not capable of producing enough vehicles for the mass market. So he decided to leap over the fence and begin to compete in the luxury car sector.
Renzo Rivolta called on the services of renowned designer Giorgetto Giugiaro, engineer Giotto Bizzarrini who at that time was employed by leading coach and chassic builder Bertone to work on his first release, the Iso Grifo Rivolta A3C.
The Iso Grifo Rivolta A3C was a handsome two-door coupe built to a very high technical standard, designed to provide ultimate driving performance.
Powered by a 5.4-liter V8 Chevrolet small-block engine capable of generating 300 bhp (220 kW). There were a choice of transmissions, either manual or automatic, supplied by General Motors of Detroit. Rivolta called upon Jaguar to supply their De Dion suspension and four-wheel disc brake system, especially popular at this time. Almost all of the cars made by the Iso Grifo Rivolta A3C restoration kept this design. In 1963, Rivolta announced the release of a luxury version of the Iso Grifo Rivolta , with the suffix A3L, with the L being an abbreviation of Lusso, which means "luxury" in Italian) for Renzo Rivolta, who wanted a follow-up to his Iso Grifo Rivolta A3C restoration of the Rivolta GT. Giorgetto Giugiaro at Bertone designed the body, while Bizzarrini worked on the mechanics.In the same year, Iso Rivolta Bertone showed off their Grifo A3/L prototype at the Turin Auto Show, as well as a partially completed version of what was to be the Grifo A3C competition car. Positive responses were forthcoming for both models.
Next to come from the creative mind of Renzo Rivolta and his design and production team was the Grifo A3/L Spyder, that went into production in 1965, Very few were sold, although those who were went on to become major collector’s items. Iso Grifo Rivolta A3C Restoration. The dramatic success of Iso Rivolta came to a tragic halt in August of 1996, with sudden and unexpected passing or Renzo Rivolta. Rivolta was only 58 years of age when he passed. The reins were rapidly handed over to Piero Rivolta, Renzo’s 25 year old son. The feeling was that under Piero's direction, Iso Grifo Rivolta would falter. Piero looked to be proving the critics wrong in 1967 when he announced the launch of Fidia, a limousine advertised as "the fastest four-seater on wheels". However, the weight of responsibility and the lack of experience were to prove too much for Piero and things started to come adrift for Iso Grifo Rivolta, causing the company to experience growing financial difficulties, till they had no option but to declare bankruptcy in 1974.