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1963 Jawa released their new typ 579 at 250cc and 350cc two-strokes. They where lighter and faster than the typ 557 they replaced. 1964, 1965 and 1966 Jawa struggled with the "banana frame" production bike. Vlastimil Valek and Peter Dobry raced the bikes and Valek best managed to keep the brand appearing on the GP scene during this time. The last season of the "banana frame" bike Valek raced a 402cc bike in the 500GP managing to take 4´th place in the final standings. Jawa switched to a dual tube conventional frame design. Jaroslav Homola finished 10'th in the 500cc world standings on this 420cc Jawa in 1969. Text source : www.mxbikes.com
1963 Jawa released their new typ 579 at 250cc and 350cc two-strokes. They where lighter and faster than the typ 557 they replaced. 1964, 1965 and 1966 Jawa struggled with the "banana frame" production bike. Vlastimil Valek and Peter Dobry raced the bikes and Valek best managed to keep the brand appearing on the GP scene during this time. The last season of the "banana frame" bike Valek raced a 402cc bike in the 500GP managing to take 4´th place in the final standings. Jawa switched to a dual tube conventional frame design. Jaroslav Homola finished 10'th in the 500cc world standings on this 420cc Jawa in 1969. Text source : www.mxbikes.com