AMA Motorcycle Hall of Fame Legend Roger De Coster has retired as the manager of the U.S. Motocross of Nations team, capping a 44-year career during which he guided U.S. riders to 25 titles at the annual Fédération Internationale de Motocyclisme World Championship event.

“Roger De Coster’s impact on Motocross in America is indelible and without compare,” said AMA President and CEO Rob Dingman. “On behalf of the AMA Board of Directors, AMA staff and AMA members everywhere, I extend our heartfelt gratitude for the decades of leadership, guidance and numerous FIM World Championships. Roger, we couldn’t have done it without you.”

De Coster has managed the MXON Team USA 36 times, four of those in the Trophee des Nations race that prior to 1984 featured 250cc motorcycles. With De Coster at the helm, Team USA has won the MXON 21 times and the Trophee des Nations four times.