The YZ250 motocross race bike made by Yamaha. The challenger .... Brown Sugar . Tribute to Freddie Mercury & Queens. Yeah !!! forever . Amen. . Views 3038 . Super good !!!!

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Yamaha YZ250

MODEL and Champion : Andrew Brown Sugar .

Manufacturer Yamaha
Production 1974-
Successor YZ450
Class Motocross
Engine 250 cc single-cylinder, water-cooled, two-stroke, case reed
Power 49 hp1
Torque 32 ft·lbf1
Transmission 5-speed
Suspension Monoshock, 12.8 inches travel
Brakes double disc
Tires Front: 80/100-21-51M ; Rear: 110/90-19-62M
Wheelbase 57.8 inches
Dimensions L 85 inches
W 32.5 inches
H 51.2 inches
Seat height 39.1 inches
Weight 212 lb (96 kg) (dry)
Fuel capacity 2.1 US gallons
Related Yamaha YZ450F
The YZ250 is a 2-stroke motocross race bike made by Yamaha. It was launched in the 1970s, and has been regularly updated since. Is still a very capable motocross and offroad machine. 2009 saw Jason Raines win his 5th AMA National Hare Scramble title and 2010 looks to be Jason Greer’s turn on top with a 2010 YZ250 in the National Hare Scrambles.

The YZ250 has a 249 cc liquid-cooled two stroke reed valved engine with a YPVS exhaust valve for a wider spread of power. The engine produces a peak 46.8 horsepower (34.9 kW) at 8800 rpm and 30.6 foot-pounds force (41.5 N·m) of torque at 7500 rpm, with a 9000 rpm redline (Motocross Action Magazine). In fact, it is still making 45.0 horsepower (33.6 kW) at 9100 rpm and 41.6 horsepower (31.0 kW) at 9600 rpm before the rev limiter kicks in.

Since its introduction in 1974, the YZ250 has had a single backbone steel frame. For the 2005 model year, however, the YZ250 has a new frame made entirely from aluminum, which brought the dry weight down to 212 pounds, and more recently in 2010, to 211 pounds. The bike has a Swingarm rear suspension system with more than a foot of travel, as well as telescopic inverted forks with 11.8 inches (300 mm) of travel.2 Front and rear hydraulic disc brakes round out the YZ.

Among the industry’s firsts that Yamaha pioneered and introduced into the YZ250 was the mono-shock suspension in 1975, the brake-activated suspension system (BASS) and the powervalve system (YPVS) at the exhaust port in 1977.

The YZ250 holds many championships:
5 AMA National Motocross Titles.3
9 AMA National Supercross Titles3
Most recently, Chad Reed rode the YZ250 to an AMA National Supercross title in 2004.4
5 AMA National Hare Scramble Championships – Jason Raines (2003, 2004, 2007, 2008 an 2009)

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