Bostrom's AMA Superbike career began in 1998 when he replaced the injured Miguel Duhamel on the Erion Honda, winning his 2nd and 3rd races in the class.
This, coupled with his back-to-back second-place finishes in AMA's highest class lead many observers to believe a transfer to World Superbike, or possibly MotoGP was in Bostrom's future.
Bostrom's brother, Ben, took his spot on the Ducati team after Eric left for Yamaha after the 2005 season ended.
During 2010 Bostrom rode part-time in the AMA Daytona Sportbike and Superbike classes for Cycle World Attack Performance Yoshimura Suzuki.
[1] Bostrom has also raced in the Superbike World Championship, usually as a wildcard entry in the United States rounds at Laguna Seca.
He also appeared at Laguna in 2003, but an accident caused by Aaron Yates in the second turn of the first lap prevented him taking any further part in the action.