The all-new engine comes with a lighter cylinder that maximises the winning potential of the high compression head, forged piston and aggressive cam profiles. And the YZ450F’s digital Power Tuner lets you make instant trackside engine mapping adjustments and gain a real advantage in all riding conditions.
Its new aluminium bilateral frame comes with thicker down tubes and thinner main spars for reduced weight and sharper handling – while the industry-leading coil spring-type forks and linkage rear suspension deliver exceptional balance.
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.
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.
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.
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.
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.
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-move 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.
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.
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.
The compact new engine is equipped with a highly advanced Mikuni® fuel injection system. Featuring a lightweight 44 mm 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.
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.
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.
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 270 mm disc, and a new lighter rear caliper and a new rear disc.
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.
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.
Yamaha has been building winning motocross bikes for five decades. During this time the MX world has seen the rapid development of new technologies that have transformed the sport. And the YZ450F’s Power Tuner is at the forefront of the digital revolution that is taking motocross to the next level.
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