YZ250
THE 2-STROKE LIVES
The YZ250 is the standard by which every other 250 cc 2-stroke motocross bike wishes they could live up to. With giggle inducing power, unbelievable lightweight handling and legendary Yamaha durability. Plus, 2-strokes are easier and cost less to maintain.
- Features
- Options
- Specs
- Available Models
Key Features
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A light aluminum frame housing a patented YPVS® Power valve-equipped ripper of an engine results in an awesome power-to-weight ratio.
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The YZ250 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs, gripper seat, and Excel® rims.
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Ultra lightweight means nimble handling with less fatigue.
Engine
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249 cc liquid-cooled reed-valve-inducted two-stroke engine is lightweight, compact and features an incredibly wide, hard-hitting powerband.
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Patented YPVS® power-valve system combines crisp, hard-hitting, bottom-end acceleration with strong midrange and eye-opening top-end.
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Special-design carbon fiber reed-valve petals improve throttle response and engine performance across the entire rpm range.
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Smooth-shifting, five-speed, close-ratio transmission with heavy-duty, multi-plate clutch.
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Primary kick starter ensures smooth, easy starting action and reduced weight.
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Large-capacity radiator features a ten-row core with four louvers for maximum cooling efficiency.
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38 mm Keihin® PWK carburetor with power jet and Throttle Position Sensor (TPS) ensures precise fuel/air mixing and extra-crisp throttle response throughout the powerband.
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Digital CDI ignition system delivers precise spark for faster, stronger response anywhere in the powerband.
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Trick, works-style clutch lever features race-spec barrel adjuster for on-the-fly adjustability.
Chassis / Suspension
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YZ250F-style front-brake caliper and wave-style front and rear discs minimize unsprung weight and provide excellent stopping power.
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The KYB® 48 mm forks feature the Speed-Sensitive System that uses piston speed to control damping force for super-precise handling and a smooth ride.
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A carefully engineered, advanced aluminum frame and swingarm give the YZ250 the best handling in the 250 class.
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Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
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Rear, fully adjustable KYB® shock features a super-light titanium shock spring and reduced-friction Kashima coating of internals. 12.4 inches of travel, separate adjusters for high-speed and low-speed compression damping, and a full lock oil rebound system for increased comfort all add up to fantastic rear wheel control and a sweet ride.
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Lightweight 21-inch front and 19-inch rear Excel rims provide exceptional durability and help reduce unsprung weight for optimal suspension, performance and handling.
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Tapered rear wheel spacers ease sliding the rear wheel into place for quicker tire changes.
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Premium Dunlop® knobbies offer race-spec traction and wear.
Additional Features
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Wide, cleated, folding titanium footpegs are lightweight and provide excellent comfort, grip and ground clearance.
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Special-design “gripper” type seat and fuel tank, forward-canted steering crown and low handlebar provide excellent movement and more comfortable ergonomics for riders.
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Wide-diameter fuel tank cap ensures easier usage, while larger tank opening means faster, hassle-free refueling.
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A light and strong aluminum handlebar in adjustable mounts means comfort and control.
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Premium drive chain has gold-colored plates for outstanding looks.
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Use of light box-head bolts throughout the chassis eases maintenance while reducing weight and increasing performance.
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Repackable exhaust silencer.
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Durable, comfortable handlebar grips.
General Information
Color
Team Yamaha Blue / White
Dimensions
Engine
Engine
Reed-valve inducted, 2-stroke
Bore x Stroke
66.4 x 72 mm
Compression Ratio
8.9 ~ 10.6:1
Carburetion
Keihin® PWK38S
Drivetrain
Transmission
Constant-mesh 5-speed
Brakes/Wheels/Tires
Brakes
Front: 250 mm hydraulic single disc
Rear: 245 mm hydraulic single disc
Tires
Front: 80/100-21-51M
Rear: 110/90-19-62M
Operational
Suspension
Front: Speed-Sensitive System inverted fork, fully adjustable; 11.8 in. travel
Rear: Fully adjustable single shock; 12.4 in. travel