He had several further podiums but last year opted to finish his career on the World Superbike series.
He was 13th in this season's Superbike standings when he died.
AMERICAN Superbike star Nicky Hayden is in a medically induced coma after being hit by a car while training on his bicycle.
No American has won the Moto GP world title since Hayden.For Nicky, a distinguished amateur dirt track and road racing career transitioned into a successful stint in the AMA Grand National Championship and AMA Superbike series, in which he earned the 1999 AMA Supersport and 2002 AMA Superbike crowns with American Honda.The Hayden family has released the official obituary for 2006 Moto GP Champion Nicky Hayden, who died May 22, 2017, from injuries sustained in a cycling accident in Italy.Maurizio Bufalini Hospital have announced the American motorcycle racer has died aged 35.A statement said: "The medical college has confirmed the death of the patient Nicholas Patrick Hayden, recovering from Wednesday May 17 in a hospital intensive care unit of Cesena Bufalini as a result of serious multiple injuries occurred on that date."Hayden was struck by a car while riding in Rimini last Wednesday.