The Evolution of Alfa Romeo’s Bialbero, One of the Best 4-Cylinders of All Time

Back in the fifties when most Italian manufacturers were busy developing large engines, Alfa Romeo went the opposite route and created the Twin Spark inline-four. The small unit powered some of the most iconic road and track-oriented Alfas for more than forty years, earning its place among the greatest four-cylinders ever built.

Source: The Evolution of Alfa Romeo’s Bialbero, One of the Best 4-Cylinders of All Time

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