2005 Brown competed in Europe during the supercross season, but returned to race the AMA 125cc Motocross Championship. He earned three back-to-back podium finishes and a win at Budds Creek, Md., before entering a mid-season slump... Raced with Jim's Motorcycle Sales Honda team.

2004 Brown raced in the AMA 250cc Supercross series, his best results 14th-places at San Francisco and Phoenix... He contested the AMA 125cc Motocross Championship, taking an overall win at Buchanan, Mich., and earning four additional overall podium finishes... Raced with Boost Mobile Yamaha team.

2003 Brown was the runner-up for the AMA 125cc East Region Supercross Championship title, earned with a victory at Daytona Beach, Fla., and four additional podium finishes... He raced the first three races in the AMA 250cc Supercross season, earning a 10th place finish at Anaheim, round three... He raced the AMA 125cc U.S. Motocross Championship, taking overall wins at San Bernardino, Calif., and Mt. Morris, Pa... Raced with Pro Circuit Kawasaki team.