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The Yamaha YZ250F is a motocross motorcycle first released in 2001 by Yamaha. It features a DOHC , four-stroke engine and initially had a steel frame and subframe in 2001–2002. In 2003 it received an aluminum subframe, which was replaced in the 2006 model with an all-aluminum frame.
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. Although other ...
The 2024 AMA Motocross Championship season is the 53rd AMA Motocross National Championship season, the premier motocross series in USA. Jett Lawrence goes into the season as the defending champion in the 450 class, after winning every race on the way to title in 2023 .
The 2024 FIM MotoGP World Championship was the premier class of the 76th Fédération Internationale de Motocyclisme (FIM) Road Racing World Championship season, ...
YZ Monocross (1975) First production motocross bike with a single rear shock. [3] YZ400F (1998) ... This page was last edited on 26 November 2024, at 17:40 (UTC).
The Yamaha YZ450F is a four-stroke racing motocross bike built by Yamaha Motor Corporation.It was the successor to the previous YZ426F which was discontinued in 2003. It is credited by Cycle World and Dirt Rider magazines as the bike that started the four-stroke dirt bike revolution.
The Yamaha WR250F is an off-road motorcycle made by Yamaha Motor Company.It has a 250 cc (15 cu in) liquid-cooled single nikasil coated cylinder engine. First offered in 2001, it shared many components and design concepts with the YZ250F motocross model.
Yamaha YZ250F: The Yamaha YZ125 is a motocross racing motorcycle with a two-stroke 124.9 cc ... This page was last edited on 30 September 2024, at 04:42 (UTC).