2005 Narita earned a podium finish at the Anaheim, Calif. season-opener of the AMA 125cc West Region Supercross series... Raced in the AMA 125cc Motocross Championship, earning two overall top-10 finishes... Raced with Motorsport Outlet Honda team.

2004 Raced a limited AMA 125cc East Region Supercross series, earned a season-best sixth-place finish at San Diego, Calif... Raced with Saki Racing Honda team.