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List of motorcycles manufactured by Yamaha Motor Company ==First bikes== *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〔http://www.starmotorcycles.com/star/company/historyhome/home.aspx〕 *YC-1 (1956) was the second bike manufactured by Yamaha; it was a 175 cc single cylinder two-stroke.〔 *YD-1 (1957) Yamaha began production of its first 250 cc, two-stroke twin, the YD1.〔 *MF-1 (1958) 50 cc, two-stroke, single cylinder, step through street bike〔 *YDS-3 (1964) 246 cc, two-stroke, parallel-twin, it used the world’s first oil injection lubrication system in a 2-stroke engine. *DT-1 (1968) Yamaha's first true off-road motorcycle.〔 *XS-1 (1970) Yamaha's first four-stroke engine motorcycle (650 cc twin).〔http://www.yamaha-motor.com/corporate/historytimeline.aspx, Yamaha website timeline, accessed October 2, 2011〕 * Yamaha YZ Monocross (1975) First production motocross bike with a single rear shock.〔 * Yamaha YZ400F (1998) First mass-produced four-stroke motocross motorcycle.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of Yamaha motorcycles」の詳細全文を読む スポンサード リンク
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