That same year, Koichi became the official framebuilder for the United States Olympic Cycling Team.
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In 1987, Koichi came to the United States and founded his own bicycle building company, Yamaguchi Bicycles, based in Rifle, Colorado.
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Koichi was trained as a Master framebuilder at the legendary 3Rensho company in Japan, building bicycles for professional Keirin riders (notably, the ten-time Sprint World Champion Koichi Nakano).
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Koichi Yamaguchi (山口弘一) is a noted Japanese bicycle frame builder, based in the United States.
Yamaguchi Bicycles was founded in 1987 by Koichi Yamaguchi (a framebuilder who went on to work as the National Team Mechanic for the US Cycling Federation in 1988 and the official framebuilder for the United States Olympic Cycling Team in 1989).
Yamaguchi Prefecture | Ube, Yamaguchi | Yamaguchi | Koichi Ishii | Shin-Yamaguchi Station | Momoe Yamaguchi | Kristi Yamaguchi | Koichi Zenigata | Koichi Wakata | Yamaguchi, Yamaguchi | Yamaguchi University | Tokuyama, Yamaguchi | Tamon Yamaguchi | Sweden v. Yamaguchi | Roy Yamaguchi | Koichi Wajima | Koichi Sakamoto | Koichi Nakamura | Koichi Domoto | Akane Yamaguchi | Yamaguchi prefecture | Yamaguchi Bicycles | Tsutomu Yamaguchi | Shūnan, Yamaguchi | ''Ruddock with Koichi Tohei Sensei in Iidabashi dojo (photo by Henry Kono)'' | Nagato, Yamaguchi | Mitake, Shūnan, Yamaguchi | Mine, Yamaguchi | Koichi Yamaguchi (bicycle framebuilder) | Koichi Yamaguchi |