•
YA-1 built August 1954, produced January 1955. The first bike manufactured by Yamaha was actually a copy of the German
DKW RT 125; it had an
air-cooled,
two-stroke,
single cylinder 125 cc engine • YC-1 (1956) was the second bike manufactured by Yamaha; it was a 175 cc single cylinder two-stroke. •
DT-1 (1968) Yamaha's first true off-road motorcycle. • YZ Monocross (1975) First production motocross bike with a single rear shock. •
YZ400F (1998) First mass-produced four-stroke motocross motorcycle. ==Road bikes==