2020 Yamaha YZ450FX

Power, Tuned To Perfection;

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Built for x-country domination with electric start and smartphone power tuner app that adjusts the bike's settings to your style and the track.

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• YZ450F™-Based GNCC®/Hare Scrambles Focused Racer: The YZ450FX™ is developed from Yamaha's flagship motocross model—the YZ450F—with many added features and unique settings that make the YZ450FX the ultimate GNCC®/Woods racer.
• Yamaha Power Tuner App: Yamaha's exclusive Power Tuner app puts the flexibility and precision tunability of the GYTR® Power Tuner into your smartphone. Make fueling and ignition timing changes instantly and upload them to the bike for the ultimate in track-side tuning.
• Adjustable Engine Mapping: A handlebar-mounted map switch allows the rider to quickly select between preloaded engine maps—loaded and configured in the Power Tuner app—to account for changing track and weather conditions.
• Electric Starter System: Utilizing a compact starter motor and ultra-lightweight lithium battery, the YZ450FX maintains the convenience of push-button starting, for effortless restarts under pressure, and relaxed riding when the clock isn't ticking.
• Potent Fuel-Injected Engine: A high-compression cylinder head, forged piston, aggressive cam profiles, cylinder geometry and much more work together to give riders the ideal power spread in challenging GNCC® racing conditions.
• Class-Leading Suspension: Yamaha uses KYB® spring-type forks on all of our YZ® models, with industry leading function and easy set-up at the track—these forks are ready for the top step of the podium straight out of the box.

• Rearward-Slanted Cylinder Design: The YZ450FX's distinct rearward-slanted cylinder design—complete with rear exhaust and forward-mounted intake system—features a cylinder head that works with the frame geometry for optimized weight distribution. Inside, the engine features a straight intake tract, aggressive cam profiles, a high-compression “box bridge piston design with DLC-coated piston pin