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1975 Saddleback Park - Trans-AMA International Motocross Series Ad
Cycle World International Motocross. Final event, Trans-AMA International Motocross Series. Europe's finest riders from the 250cc and 500cc world championship classes competing against America's best. $18,000 purse. Sanctioned by The American Motorcycle Association and The Federation Internationale Motorcycliste. Sponsored by Cycle World Magazine.
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