Trans-AMA motocross champions

.





DeCoster won the Trans-AMA Championship four years in a row (1974-1977), becoming an admired and popular figure in the sport in America as well.



The following is a list of Trans-AMA Champions, from 1970 to 1978. The championship was an international series established by the American Motorcyclist Association as a pilot event to help establish motocross in the United States. The series was based on a 500cc engine displacement formula, although the first year of the event featured both 250 and 500cc events. The races run on American tracks to international standards, featuring the top riders from the F.I.M. world championship against the top American riders. In 1970 and 1971, the highest placing American rider at the end of the series was considered the A.M.A. national champion. After 1978 the series was renamed the Trans-USA series, but had fewer European riders participating. The Inter-AMA series was a similar year-end championship, but used a 250cc engine displacement formula.

• Year Rider...............................Country........................Machine
• 1970 Dave Nicoll...............United Kingdom...................BSA
• 1971 Sylvain Geboers...........Belgium...........................Suzuki
• 1972 Åke Jonsson..................Sweden............................Maico
• 1973 Adolf Weil...............West Germany......................Maico
• 1974 Roger De Coster............Belgium..........................Suzuki
• 1975 Roger De Coster............Belgium..........................Suzuki
• 1976 Roger De Coster............Belgium..........................Suzuki
• 1977 Roger De Coster............Belgium..........................Suzuki
• 1978 Bob Hannah..............United States....................Yamaha

.