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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 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 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.
2024. Supercross. Deegan won round 7, 13, and 17. He also compiled a few other podiums. But with the rough opening round with a 16th place and a 9th place at round 9 he would wind up finishing 2nd in the points standings. Motocross season. Deegan won 5 out of 11 rounds of his second full national season to capture the 2024 pro 250 motocross ...
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.
The TZR250 was still raced in the Yamaha Past Masters race series with the British racing club as of 2024. [4] Racing engines are currently claiming about 56 hp (42 kW) at 11,000 rpm. [citation needed] Racing fuel ratios typically 1:30. Standard exhausts are difficult to improve on in terms of power and torque, but they are very large and ...
Antonio "Tony" Cairoli (born 23 September 1985) is an Italian professional motocross racer. He competed in the Motocross World Championships from 2002 to 2021. Cairoli is notable for winning nine FIM Motocross World Championships. [2]
The XT600 is considered to be an all-purpose Enduro, which is suitable for use on the road as well as off-road driving. Its disc brakes, four-valve engine, mono-shock absorber (Monocross) and contemporary 12-volt electrics represented significant improvements over the 1975 Yamaha XT500 model.