2021 Yamaha YZ250F

Tune, Race, Win;

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With a higher-performing engine, an updated lightweight frame, and more, the YZ250F is engineered to race - and win - like a champion.

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• Advanced 250cc Four-Stroke: The YZ250F is ready to roost the competition with race-winning features never before seen in the 250cc class.
• Power Tuner App: Yamaha's free of charge and industry-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 ultimate track-side tuning.
• Electric Starter System: Utilizing a compact starter motor and ultra-lightweight lithium battery, the YZ250F brings the convenience of push-button starting to the racetrack for effortless restarts under pressure and relaxed riding when the clock isn't ticking.
• Tuned Aluminum Frame: Yamaha's bilateral beam frame features main spars, engine mounts and mounting position that are designed to centralize mass and provide an ideal balance between cornering feel and straight-line rigidity.
• Advanced Engine Design: Featuring a high-spec piston, aggressive cam profiles, cylinder geometry and more, Yamaha's reversed cylinder head layout works to give YZ250F riders the best balance of high-rpm power with a broad, useable powerband.
• Class-Leading Suspension: Yamaha's spring-type forks with refined, speed-sensitive damping give industry-leading suspension performance straight out of the box.

• Innovative and Upgraded Engine: The liquid-cooled, DOHC 4-valve, fuel-injected engine features a forward-positioned straight downdraft intake with symmetrical intake and exhaust ports. For 2021, the engine has been updated with new cylinder head featuring a new air intake system, an improved intake port shape, new exhaust camshaft profile, and an updated ECU—all to produce stronger mid- to top-end power and increased peak power, while retaining its class-leading low-end torque.
• Exclusive Power Tuner App: The free of charge and industry-