Segment: Enduro/Offroad
Production years: 2002, 2003
There's no F after the 2002 YZ250 so we're dealing with 2-stroke might, this time. This model year received a lot of improvements, starting with a new, lighter and tougher swingarm and recalibrated suspensions, with more precise travel and providing even more control.
In the engine department, the 2002 Yamaha YZ250 comes with a new cylinder head and combustion chamber, a reshaped exhaust port, and a revised second gear for explosive power deployment. The factory-spec racing clutch lever is adjustable, and the rear master cylinder and discs are also revamped.
engine specs | Type: | liquid-cooled, reed valve-inducted, 2-stroke | Displacement: | 249 cm3 | Bore X Stroke: | 2.6x2.8 in OR 66 mm | Compression Ratio: | 9.0 – 10.6:1 | Horsepower: | -/- KW(hp)/RPM | Torque: | 0/- lb-ft/RPM OR 0 Nm/RPM | Fuel System: | 38mm Keihin PWK w/power jet & throttle position sensor |
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transmission specs | Gearbox: | 5 speed, manual | Clutch: | Multiplate wet clutch | Primary Drive: | - | Final Drive: | #520 O-ring chain |
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chassis specs | Frame: | Steel | Front Suspension: | 46mm Kayaba inverted telescopic fork w/adjustable compression and rebound damping; 11.8 " travel | Rear Suspension: | Fully adjustable Kayaba single shock, 12.4" travel; separate hi/lo speed compression adjustment | Front Brake: | 250mm floating disc | Rear Brake: | 245mm disc |
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dimension specs | Overall Length: | 85.9 in OR 2182 mm | Overall Width: | 32.6 in OR 828 mm | Seat Height: | 39 in OR 991 mm | Wheelbase: | 58.3 in OR 1481 mm | Ground Clearance: | 15.6 in OR 396 mm | Weight: | 214 lbs OR 97 kg | Fuel Capacity: | 2.1 gallons OR 7.9 L |
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tyres specs | Front: | 80/100-21 Dunlop | Rear: | 110/90-19 Dunlop |
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