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| 4-stroke, forward-inclined single cylinder, 5-valves |
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| Ultimate Cornering Performance |
Motocross races are won or lost in the turns - that's why, from the ground up, the YZ250F has been designed for exceptional cornering.
Perfectly balanced, a lightweight aluminium frame turns effortlessly on the approach to every bend. And, with more linear power delivery through the rev-range, the revised 4-stroke DOHC 5-valve engine lets you power out of the exit. At the same time, the bike's responsive suspension gives feedback on the traction while smoothing over the bumps
On and off the track, the YZ250F's poise and agility are reflected in its sleek styling and its compact, dart-like shape. In every way, the YZ250F leaves the competition behind. |
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The Bilateral Beam frame is specific to the 250 and is more compact than the previous generation chassis. This places the rider closer to the front wheel, which delivers superb rigidity balance for unmatched lightweight handling and cornering. This nimbleness lets the rider get on the gas sooner out of corners and cross the finish line with less fatigue - even on long motos.
The optimized engine delivers a high level of power in the low-to-midrange, with a great torquey feel, exactly where riders want it. That is due to the straight intake boot that enhances breathing, carburetor that provides excellent throttle response and fuel atomization, and valve train components that reduce inertial mass and boost low end torque. Exhaust is also enhanced with a D-shaped exhaust port. Ongoing refinement to the suspension and engine produces an amazingly balanced, light-handling machine with performance that's accessible to all levels of riders.
The styling emphasizes the bike's lightweight and nimble handling character. The sharp, horizontal lines set the bike apart with a clean, aggressive look.
KYB® suspension is tuned to work with the Bilateral Beam frame for unmatched handling. The clutch lever has a light pull feel, even though the clutch has stronger engagement. The clutch also has a wide engagement range that will give riders an advantage off the line. . . shift after shift, motocross after motocross. |
ENGINE TYPE : | liquid-cooled, 4-stroke, DOHC, 5-valve, Forward-inclined single cylinder | DISPLACEMENT : | 250cc | BORE X STROKE : | 77.0 mm x 53.6 mm | COMPRESSION RATIO : | 13.5 : 1 | LUBRICATION SYSTEM : | Dry sump | CARBURETOR : | Keihin FCR-MX37/1 | CLUTCH TYPE : | Wet, Multiple Disc | IGNITION : | CDI | STARTER SYSTEM : | kick | TRANSMISSION SYSTEM : | Constant Mesh, 5-speed | FINAL TRANSMISSION : | Chain |
FRAME : | Aluminium Bilateral Beam | FRONT SUSPENSION : | Telescopic forks | FRONT TRAVEL : | 300 mm | CASTER ANGLE : | 27º | TRAIL : | 117.4 mm | REAR SUSPENSION : | Swingarm, (link suspension) | REAR TRAVEL : | 310 mm | FRONT BRAKE SYSTEM : | Dual Discs, Ø 250 mm | REAR BRAKE SYSTEM : | Single Disc, Ø 245 mm | FRONT TYRE : | 80/100-21-51M | REAR TYRE : | 100/90-19 57M |
OVERALL LENGTH : | 2168mm | OVERALL WIDTH : | 825mm | OVERALL HEIGHT : | 1304mm | SEAT HEIGHT : | 991mm | WHEEL BASE : | 1473mm | MINIMUM GROUND CLEARANCE : | 377 mm | WET WEIGHT (INCLUDING FULL OIL AND FUEL TANK : | 102 kg | FUEL CAPACITY : | 6.4 L | OIL TANK CAPACITY : | 1.2 L |
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