In 1929, Alfa Romeo introduced the 6C 1750 Super Sport (SS) and it featured an improved 1.75-liter straight-six cylinder engine, finned intake manifold, twin-camshafts, and an optional supercharger mounted upon a shortened 108-inch wheelbase. Only 121 Super Sport examples were produced in 1929. The model quickly proved to be one of Alfa’s most popular, expensive, and successful creations.