The VX4 / 90 (FB series), introduced in 1961, was essentially a sports version of the Victor, with the 4-cylinder 1508cc twin carburettor engine delivering 71 horsepower, thanks also to a better compression ratio. In 1963 the second series was presented, equipped with a 1594cc engine and 85 horsepower. The VX4 / 90 went out of production in 1964.