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Key Features:
- A light aluminum frame housing a patented YPVS® Power valve-equipped ripper of an engine results in an awesome power-to-weight ratio.
- The YZ250 is ready to race out of the crate, complete with an aluminum handlebar, titanium foot pegs, gripper seat, and Excel® rims.
- Ultra lightweight means nimble handling with less fatigue.
Engine:
- 249cc liquid-cooled reed-valve-inducted two-stroke engine is lightweight, compact and features an incredibly wide, hard-hitting powerband.
- Patented YPVS® power-valve system combines crisp, hard-hitting, bottom-end acceleration with strong midrange and eye-opening top-end.
- Special-design carbon fiber reed-valve petals improve throttle response and engine performance across the entire rpm range.
- Smooth-shifting, five-speed, close-ratio transmission with heavy-duty, multiplate clutch.
- Primary kickstarter ensures smooth, easy starting action and reduced weight.
- Large-capacity radiator features a ten-row core with four louvers for maximum cooling efficiency.
- 38mm Keihin® PWK carburetor with power jet and throttle position sensor (TPS) ensures precise fuel/air mixing and extra-crisp throttle response throughout the powerband.
- Digital CDI ignition system delivers precise spark for faster, stronger response anywhere in the powerband.
- Trick, works-style clutch lever features race-spec barrel adjuster for on-the-fly adjustability.
Chassis/Suspension:
- YZ250F-style front-brake caliper and wave-style front and rear discs minimize unsprung weight and provide excellent stopping power.
- The KYB® 48mm forks feature the Speed-Sensitive System that uses piston speed to control damping force for super-precise handling and a smooth ride.
- A carefully engineered, advanced aluminum frame and swingarm give the YZ250 the best handling in the 250 class.
- Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
- Rear, fully adjustable KYB® shock features 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.
- Lightweight 21-inch front and 19-inch rear Excel rims provide exceptional durability and help reduce unsprung weight for optimal suspension, performance and handling.
- Tapered rear wheel spacers ease sliding the rear wheel into place for quicker tire changes.
- Premium Dunlop® knobbies offer race-spec traction and wear.
Additional Features:
- Wide, cleated, folding titanium footpegs are lightweight and provide excellent comfort, grip and ground clearance.
- Special-design “gripper” type seat and fuel tank, forward-canted steering crown and low handlebar provide excellent movement and more comfortable ergonomics for riders.
- Wide-diameter fuel tank cap ensures easier usage, while larger tank opening means faster, hassle-free refueling.
- A light and strong aluminum handlebar in adjustable mounts means comfort and control.
- Premium drive chain has gold-colored plates for outstanding looks.
- Use of light box-head bolts throughout the chassis eases maintenance while reducing weight and increasing performance.
- Repackable exhaust silencer.
- Durable, comfortable handlebar grips.
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Specifications 
Engine Type 249cc liquid-cooled 2-stroke; reed-valve inducted Bore x Stroke 66.4 x 72.0mm Compression Ratio 8.9~10.6:1 Fuel Delivery Keihin® PWK38S Ignition CDI Transmission Constant-mesh 5-speed; multiplate wet clutch Final Drive Chain Drive Chassis Suspension / Front Speed-Sensitive System inverted fork; fully adjustable, 11.8-in travel Suspension / Rear Fully adjustable single shock, 12.4-in travel Brakes / Front Hydraulic single disc brake, 250mm Brakes / Rear Hydraulic single disc brake, 245mm Tires / Front 80/100-21-51M Tires / Rear 110/90-19-62M Dimensions Length 85.7 in Width 32.6 in Height 51.4 in Seat Height 39.1 in Wheelbase 58.3 in Ground Clearance 15.0 in Fuel Capacity 2.1 gal Wet Weight*** 227 lb Other Warranty 30 Day (Limited Factory Warranty)