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