ESO SPEEDWAY was a Czech motorcycle factory producing only racing machines from 1949 until 1964, when it joined Jawa ESO was founded by a motorcycle racing driver Jaroslav Simandl, and made bikes in 250, 350, and 500 cc, primarily for speedway, moto-cross and ice racing.

Eso was a Czech motorcycle factory producing only racing machines from 1949 until 1964, when it joined Jawa. ESO was founded by a motorcycle racing driver Jaroslav Simandl, and made bikes in 250, 350, and 500 cc, primarily for speedway, moto-cross and ice racing.