New for 2019 Optimized Suspension Settings Thicker axle collars front and rear improve stiffness, with new suspension settings matched to for excellent rider contact feeling.
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 via the onboard WiFi system for the ultimate in track-side tuning.
Electric Starter System Utilizing a compact starter motor and ultra-lightweight lithium battery, the YZ450F brings the convenience of push-button starting to the racetrack, 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 YZ450F riders the best balance of open-class power with controllability.
Advanced Alloy Frame Yamaha’s bilateral beam aluminum frame features main spars, engine mounts and engine mounting position that centralize mass and provide an ideal balance between cornering feel and straight-line rigidity.
Class-Leading Suspension Yamaha continues to use spring-type forks with refined, speed-sensitive damping to give industry-leading suspension performance straight out of the box.
Launch Control System (LCS) LCS optimizes engine output for quicker, smoother race starts every time, boosting controllability out of the gate and ensuring the rider has the best chance to get the holeshot and lead the competition into the first turn.
Advanced Fuel Injection The engine breathes through a 44mm Mikuni® throttle body fed by a high pressure electric pump to ensure optimum fuel atomization and power for a wide range of riding conditions. The ultra-compact throttle body also saves weight for excellent mass-centralization.