2011 Yamaha YZ250F (discontinued)

2011 Yamaha YZ250F  2011 Yamaha YZ250F
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Product Yamaha YZ250F
Model Year 2011
Engine Size 250cc
Engine Type Liquid-cooled DOHC Four-Stroke; 5 titanium valves
Engine Displacement 250cc
Bore x Stroke 77.0 x 53.6mm
Compression Ratio 13.5:1
Fuel System Keihin® FCR MX37
Ignition CDI
Transmission Constant-mesh 5-speed; multiplate wet clutch
Final Drive
Suspension Front Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel
Suspension Rear Fully adjustable single shock; 12.0-in travel
Brakes Front Hydraulic single disc brake, 250mm
Brakes Rear Hydraulic single disc brake, 245mm
Tires Front 80/100-21
Tires Rear 100/90-19
Overall Length 85 in
Overall Width 32.5 in
Overall Height 51.3 in
Seat Height 38.9 in
Wheelbase 57.7 in
Ground Clearance 14.8 in
Fuel Capacity 1.7 gal
Curb Weight 224.8 lb


• The valve spring retainers are lightweight aluminum instead of steel, and valve spring pressure is lighter for reduced valve-opening force. This contributes to superior low-to-midrange torque characteristics due to less power-robbing friction. There’s also a higher lift cam profile, while valve stem ends are chromium-nitride coated for exceptional reliability and reduced maintenance.
• The exhaust port is “D” shaped instead of round. This increases velocity through the port for excellent throttle response, while enhancing the power feeling of the engine.
• The radiator is lower and further back and the oil tank is compact and repositioned to achieve greater mass centralization.
• The carburetor bore has a venturi shape, plus there’s recalibrated jetting and a accelerator pump. This translates to impressive response when the rider snaps open the throttle, and contributes to superb torquey low-to-midrange power characteristics.
• The intake boot offers a straight, smooth tract for excellent engine breathing and more power. The airbox is shaped to tuck neatly into the Bilateral Beam frame.
• The exhaust pipe has been carefully tuned to optimize engine power, with a muffler that’s 50mm longer and with a narrower core – a design that lets the YZ250F comfortably meet the latest noise standards without sacrificing power.
• Engineers were able to increase the clutch spring load for stronger engagement, yet, thanks to a recalibrated clutch actuation arm cam ratio, lever pull is actually lighter than before.
• Third and fourth gear ratios are slightly taller, and third, fourth, and fifth gears are stronger than ever with drive dog shapes for positive engagement. That gives riders a strong gearbox that’s been carefully matched to engine power characteristics.


• The Bilateral Beam frame is crafted from a carefully chosen combination of forged and extruded aluminum pieces – 20 in all – all welded together to provide unmatched rigidity balance.
• The KYB® speed-sensitive front fork delivers exceptional damping feel, responsiveness, and bump absorption characteristics. The piston rods have a new surface treatment, and the oil seal is a new design.
• The 4-way-adjustable KYB® rear shock has been designed to make the most of the Bilateral Beam frame design. It’s lower in the frame for excellent mass centralization.
• The tank, seat, and rear fender are flat and the relationship between handlebars, pegs, and seat result in a natural, more forward riding position that facilitates rider movement. The fuel tank has been moved toward the center of the bike for mass centralization. The ProTaper® bars are four-way adjustable, and handlebar mounts and footpegs are 5mm higher to optimize rider position on the chassis.

Additional Features:

• Riders have a choice of two color options: Team Yamaha Blue and White or White and Red.

Available Accessories:

Please refer to the Yamaha Accessories & Apparel Catalog or go to yamaha-motor.com.
* Wet weight includes the vehicle with all standard equipment and all
fluids, including oil, coolant (as applicable) and a full tank of fuel. It does not include the weight of options or accessories. Wet weight is useful in making real-world comparisons with other models.

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