Lamson is a native of
Orangevale, California where he attended
Casa Roble High School. He began competing in the AMA Motocross Championship in 1988. Lamson won the 125cc AMA motocross national championship in 1995 and 1996 as a member of the
Honda factory racing team. Lamson was a member of the victorious American 1996
Motocross des Nations team that included
Jeff Emig and
Jeremy McGrath. At the 1996 Motocross des Nations in Jerez, Spain, he won the combined 500cc/125cc field in the first moto on a
Honda CR125M, becoming the first competitor in Motocross des Nations history to win a moto outright on a 125cc motorcycle against larger machines. He competed in his final AMA motocross race in 2007 for career that spanned 20 years, one of the longest in AMA history. After his motocross racing career, Lamson served as the racing team manager for the MDK Honda team and the Star Yamaha Racing Team. ==References==