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Based on the benchmark-setting YZ450F motocrosser, the all-new YZ450FX is designed to dominate cross country competition. Lighter, more compact, with improved rider ergonomics, revised chassis, more powerful engine and next-generation Yamaha Power Tuner app all carry over directly from the YZ450F.


Additional modifications tailored toward enhanced cross country performance include a wide-ratio transmission, larger fuel capacity, 18-inch rear wheel, side stand, skid plate, revised ECU and suspension settings, along with a 10mm lower seat height for increased maneuverability in challenging off-road conditions.


  • Engine Type Liquid-cooled, 4-stroke, DOHC, 4-valve
    Displacement (cc) 450.0
    Bore x Stroke (mm) 97.0 x 60.8
    Compression Ratio 13.0 : 1
    Lubrication System Dry sump
    Fuel Management Fuel Injection
    Ignition TCI
    Starter System Electric
    Fuel Tank Capacity (L) 7.8
    Final Transmission Chain
    Transmission Constant mesh 5-speed
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