Segment: Enduro/Offroad
Production years: 2003, 2004
With around 40 years of YZ250 history, it was natural that the 2003 iteration carried on the acclaimed nerve and maneuverability, in a package with received multiple updates for even higher performance and more durability. The forks went up to 48mm and received a new coating for smoother action, and titanium pegs shaved off some more weight.
The 2003 YZ250 receives a new gripper-style seat cover, revised engine internals for a better mid-range power deployment, and an adjustable clutch lever for quick, on-the-fly fine tuning.
YAMAHA YZ250 2003-2004
YAMAHA YZ250 249
| 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: | 9.1 – 10.6:1 | Horsepower: | -/- KW(hp)/RPM | Torque: | 0/- lb-ft/RPM OR 0 Nm/RPM | Fuel System: | 38mm Keihin PWK w/power jet and 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: | 48mm Kayaba inverted cartridge fork w/adj. compression and rebound damping; 11.8 in. travel | Rear Suspension: | Kayaba single shock w/adj. preload, compression & rebound damping and separate hi/lo-speed compression adjuster; 12.4 in. travel | 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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