2021 Yamaha YZ450F Monster Energy Yamaha Racing Edition

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Race like the Yamaha factory team with your own Monster Energy-inspired, class-leading YZ450F.

Monster Energy Yamaha Racing Edition
Inspired by the YZ450F raced by the Yamaha Supercross team, the Monster Energy Yamaha Racing Edition features an aggressive color and graphics package that stands out from the crowd.

Ultimate Open Class YZ
More Power. Better Handling. Simply put, the 2021 YZ450F is better everywhere. With a more compact motor, a thoroughly refined and balanced chassis, and improved ergonomics, the YZ450F gives the rider the ability to perform at their best, lap after lap.

Yamaha 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, or use the handlebar-mounted switch to change fueling maps on the fly.

Compact and Cutting-Edge Fuel-Injected Engine
Inside the ultra-compact new motor, a high-compression cylinder head, forged piston, aggressive cam profiles, and much more work together to give YZ450F riders the best balance of open-class power with controllability. Plus, the electric start makes it even easier.

Advanced Alloy Frame
Yamaha’s bilateral beam aluminum frame features updated main spars, triple clamps, and engine mounting points that centralize mass and provide an ideal rigidity balance between cornering feel and straight-line confidence.

Class-Leading Suspension
Yamaha's spring-type forks with refined, speed-sensitive damping give industry-leading suspension performance straight out of the box.

Cylinder Head
The YZ450F's potent motor includes combustion chamber geometry with steeper valve angles, aggressive cam profiles, a high compression piston with low friction rings, longer connection rod, larger exhaust head pipe connector, a high flow air filter, more efficient breather system, and more—all while fitting under a smaller and lighter magnesium valve cover.

ENGINE
Engine Type: 449cc liquid-cooled DOHC 4-stroke; 4 titanium valves
Bore x Stroke: 97.0mm × 60.9mm
Compression Ratio: 13.0:1
Fuel Delivery: Mikuni® fuel injection, 44mm
Transmission: 5-speed; multiplate wet clutch
Final Drive: Chain
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