In 1965, Alfa Romeo introduced a more entry level version of their Sprint GT known as the GT Junior. Two main variants were produced, the GT 1300 Junior and the GT 1600 Junior. Zagato also designed a limited production run of cars based on the GT Junior, known as the Junior Z. The GT Junior cars were very popular among racing enthusiasts, with their simple and inexpensive nature making them ideal to take to the track. Alfa Romeo GT Junior cars were built until 1977.