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Key Features

Features Gallery
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    Ultra-compact new 450cc engine

    Equipped with a high compression cylinder head as well as a durable forged piston and aggressive cam profiles, the compact new 450cc engine gives you the best balance of race-winning performance together with ultimate controllability. Delivering more power right where you need it, the new 2020 YZ450F has the ability to take you to the top.

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    Lighter rearward-slanted cylinder

    Positioned in the chassis to ensure optimum mass centralisation, the YZ450F’s distinctive rearward-slanted cylinder is even lighter and more compact for 2020. Together with the high-efficiency reverse cylinder head, long and straight inlet, and high compression piston, this sophisticated design gives you race winning performance in all conditions.

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    Compact electric starter

    The new 450cc engine is equipped with a compact and lightweight electric starter that gives push-button convenience and saves you valuable seconds when you need to restart under pressure during a race. Powered by a high capacity four-cell lithium-ion battery, it helps to keep the 2020 YZ450F’s weight down to a minimum.

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    Launch Control System

    The YZ450F’s Launch Control System (LCS) optimises the engine’s power output and running characteristics during the first few seconds of the race after the gate drops. By helping to transmit power more efficiently, the LCS gives you greater controllability off the line, increasing your holeshot-winning performance every time.

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    Yamaha Power Tuner

    When it comes to trackside tuning, nothing comes close to the revolutionary Yamaha Power Tuner. Simply download the App to your device, and using wireless connectivity you can adjust fuel/air mix and ignition timing to suit different tracks and conditions. What’s more, this innovative system also lets you access valuable engine running and maintenance data.

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    Easily adjustable mapping

    Once you’ve preloaded the YZ450F with your own engine maps using the Power Tuner you can select your preferred mapping using the handlebar-mounted switch. This on-the-fly adjustment means you can instantly change from a super-aggressive map for fast dry tracks to a more useable map in muddy or technical situations, giving you ultimate control in all conditions.

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    Robust clutch and transmission

    The robust 5-speed transmission benefits from specially-developed gears with a large surface area, and together with an updated clutch this delivers high levels of durability – and the shift drum and selectors are designed to give improved feel and a shorter stroke when shifting gear.

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    Mass-centralised wraparound exhaust

    For enhanced mass-centralisation the YZ450F is fitted with a wraparound exhaust that snakes around the cylinder, and this design enables the fitment of a muffler that is mounted further forwards. Combined with the rearward-slanted cylinder, this design helps to keep weight close to the bike’s centre for lightweight, nimble handling performance.

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    Advanced fuel injection system

    The compact new engine is equipped with a highly advanced Mikuni® fuel injection system. Featuring a lightweight 44mm throttle body, this advanced fuel injection system is fed by a high pressure electric pump that ensures optimum atomisation for excellent running performance in a wide range of riding conditions.

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    High efficiency angled radiators

    To keep the new engine running efficiently, Yamaha’s engineers have developed enhanced radiators that are angled to directly face the incoming air, so that even in the most demanding race conditions they are designed to deliver effective engine cooling for winning performance.

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    Class-leading suspension

    Just check out what other riders say about Yamaha’s suspension and you can be sure that the fully adjustable coil spring-type KYB® forks with speed sensitive damping deliver best-in-class handling. With the fully-adjustable link-type rear end and specially tuned KYB® shock, the YZ450F suspension system provides exceptional chassis performance.

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    Lightweight wheels

    Featuring factory-bike style blue anodised rims, the wheels have been refined using computer aided design to create a lighter design for lower unsprung weight, while maintaining their renowned durability. And for outstanding stopping performance with accurate control, there’s a more rigid front caliper with a 270mm disc, and a new lighter rear caliper and a new rear disc.

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    Lighter aluminium frame for sharper handling

    The YZ450F is regarded as being one of the best handling bikes in the open class, and for 2020 the compact aluminium bilateral frame has been carefully retuned. Equipped with thicker down tubes as well as thinner main spars and new engine mounts, the new lightweight frame delivers even sharper handling for reduced lap times.

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    Slimline body and seat

    The ability to shift your body weight rapidly from front to rear gives you greater control, and the YZ450F’s compact fuel tank and radiator shrouds as well as the slim seat enhance rider mobility and enable an effective knee grip. Powering out of the gate or railing a berm, you’re in charge.

Technical Specifications

Download Factsheet
  • Engine
    Engine type
    4-stroke, liquid-cooled, DOHC, 4-valves, rear ward slanting single cylinder
    Bore x stroke
    97.0 mm x 60.9 mm
    Compression ratio
    13.0 : 1
    Lubrication system
    Wet sump
    Clutch Type
    Wet, Multiple Disc
    Ignition system
    Starter system
    Transmission system
    Constant Mesh, 5-speed
    Final transmission
    Fuel Injection
  • Chassis
    Bilateral Beam frame
    Caster Angle
    Front suspension system
    KYB® spring-type fork, fully adjustable with speed sensitive damping
    Rear suspension system
    Front travel
    310 mm
    Rear Travel
    317 mm
    Front brake
    Hydraulic single disc, Ø270 mm
    Rear brake
    Hydraulic single disc, Ø240 mm
    Front tyre
    80/100-21 MX3S
    Rear tyre
    120/80-19 MX3S
  • Dimensions
    Overall length
    2,185 mm
    Overall width
    825 mm
    Overall height
    1,285 mm
    Seat height
    980 mm
    Wheel base
    1,485 mm
    Minimum ground clearance
    330 mm
    Wet weight (including full oil and fuel tank)
    111 kg
    Fuel tank capacity
    Oil tank capacity