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, with industry-leading fully adjustable, KYB® speed sensitive spring-type suspension 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 aggressive styling from front fender to the rear brake protector, and is ready to race out of the crate, complete with an aluminum tapered handlebar, YZ-F-style foot pegs, gripper seat, and off-road specific Dunlop® tires.
GNCC-Specific features 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.
270mm Front Brake Large 270mm front disc brake coupled with high-performance pad material offers 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, improving both horizontal and vertical clearance on tight, technical trails, while still providing excellent exhaust efficiency.
Advanced Carburetor 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.