Stunning Two-Stroke Power: Tuned for Cross Country and Hare Scrambles Racing
The YZ250X is optimized for the unique demands of Hare Scrambles and GNCC® racing. The YPVS™-equipped 249cc two-stroke engine is combined with a wide-ratio five-speed transmission for the ultimate cross country power plant.
Motocross-Derived Aluminum Frame
Ultra-lightweight YZ250-spec frame features carefully engineered combination of aluminum castings, forgings and extrusions for the perfect balance of rigidity and flex. The industry-leading fully adjustable, the KYB® speed sensitive spring-type suspension is tested and tuned specifically for the needs of cross country racers.
Racing Style and Ergonomics
The YZ250X carries the racing heritage of the YZ250 motocrosser with its aggressive styling from the front fender to the rear brake protector. Complete with an aluminum tapered handlebar, YZ-F-style foot pegs, gripper seat, and off-road specific Dunlop® tires, the YZ250X is ready to race out of the crate.
18-inch rear wheel, sealed O-ring chain, wide ratio transmission, narrow expansion chamber, off-road focused tires and suspension settings, a standard side stand and fuel tank petcock with reserve position are perfect for GNCC riding.
270mm Front Brake
Large 270mm front disc brake coupled with high-performance pad material offer outstanding machine control and performance, with exceptional stopping power and controllability.\
GNCC-Tuned YZ250 Power
Based on the legendary YZ250 249cc liquid-cooled reed-valve-inducted two-stroke engine, the YZ250X utilizes a revised compression ratio, exhaust port timing, revised Yamaha Power Valve System (YPVS) timing and a model-specific CDI unit—all focused on creating a wide, controllable power character ideal for cross country racing.
Revised Power Valve
The YZ250X features the patented Yamaha Power Valve System—with broader opening timing compared to the YZ250 for smoother power—to combine bottom-end acceleration with strong midrange and eye-opening top-end.
Narrow Exhaust Pipe
Unique compact exhaust expansion chamber is designed especially for the YZ250X to improve both horizontal and vertical clearance on tight, technical trails while still providing excellent exhaust efficiency.
The 38mm Keihin® PWK carburetor with throttle position sensor provides precise fuel/air mixing and crisp throttle response throughout the powerband.
Racing Intake System
Specially designed carbon fiber reed-valve petals improve throttle response and engine performance across the entire rpm range.
Smooth-shifting, five-speed, wide-ratio transmission ensures proper gearing from tight woods to wide-open fire roads.
YZ250 Cooling System
Large-capacity radiator features a ten-row core with four louvers for maximum cooling efficiency.
Digital CDI ignition system delivers precise spark for faster, stronger response anywhere in the powerband, specifically tuned for the needs of the YZ250X
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