Harrfeldt finished second in the
1966 World championships beaten in race 9 by
Barry Briggs the eventual champion. He started his British leagues career riding for
Wimbledon Dons during the
1963 Speedway National League season. After two seasons with Wimbledon he joined the
West Ham Hammers where he won the league and cup double. He was the leading rider at West Ham for a five year period and recorded two ten plus average seasons. He later rode for
Wembley Lions. In 1972 Wembley sent their entire team out on loan due to extra football fixtures stopping the speedway at Wembley and Harrfeldt moved to
Oxford Cheetahs but did not continue racing. == World Final Appearances ==