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The original YZ250 of 1974 used an air-cooled 250cc two-stroke engine of 70 mm bore and a 64 mm stroke, which was improved semi-annually. The air-cooled motor was replaced in 1982 with a 249 cc liquid-cooled two-stroke reed-valved engine with a mechanical, rather than servo-driven, YPVS exhaust valve for a wider spread of power.
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 [1] YC-1 (1956) was the second bike manufactured by Yamaha; it was a 175 cc single cylinder two-stroke. [1] YD-1 (1957) Yamaha began production of its first 250 cc, two-stroke twin, the YD1. [1]
The Yamaha XMAX is a series of maxi-scooters manufactured by Yamaha Motor Company since 2006. [1] It is available in four engines (the 125, 250, 300 and the 400 cm3), and is enjoying strong commercial success in Europe. It belongs to the GT category because of its lines, its sportiness and its comfort. [2]
The 2024 European Motocross Championship was the 36th European Motocross Championship season since it was revived in 1988. It included 14 events and 6 different classes. It started in Spain on 24 March, and ended at a different location in Spain on 29 September. [1]