7. Suzuki GS750
The GS series was Suzuki Motor Corporation’s first full range of 4-stroke powered road bikes, having previously almost exclusively built 2-stroke machines. Suzuki had produced the 4-stroke Colleda COX 125 cc and 93 cc 4-stroke single-cylinder motorcycles in 1955. However, the rest of Suzuki’s production from 1952 to 1976 were increasingly sophisticated two-strokes, whose ultimate expression was the 750 cc 3-cylinder water-cooled GT750. The first of Suzuki’s GS series was the 4-cylinder GS750 which debuted alongside the GS400 parallel twin in November of 1976.