The Yamaha YZR500 (OW48R) is the machine which took 'King Kenny' Roberts to the third of his world titles and was the most successful of Yamaha's Grand Prix racers in the period when it was fought over by 500cc two-stroke machines from Japan's major manufacturer teams, viz. Honda, Suzuki, Kawasaki and Yamaha.
This edition of the motorcycle files includes a full history of the model, plus a track test and an interview with its World Champion rider, Kenny Roberts.