Yamaha announced its 2021 YZ cross country models, including an updated YZ450FX model. The new 450 is joined by the YZ250FX four-stroke and the YZ125X and YZ250X two-strokes which return with a new Team Yamaha Blue color and graphics scheme.
2021 Yamaha YZ450FX

The new YZ450FX is designed for Hare Scramble and Grand National Cross Country (GNCC) racing. The 449cc liquid-cooled four-stroke engine receives a new cylinder head with steeper valve angles and a reshaped combustion chamber. The rear-slanting cylinder also receives a higher compression piston with low-friction rings and a longer connecting rod. Yamaha also further refined the wide-ratio five-speed transmission, claiming smoother shifting, and a more fficient crankcase breather system designed to reduce pumping losses. Yamaha claims the updated engine is lighter and more compact than last year’s engine, while producing more power across the rev range. The aluminum bilateral beam frame was also redesigned, with Yamaha claiming improved cornering performance, traction and bump reaction. The engine mounts, top triple clamp and front axle were also revised to work with the new frame, and the KYB suspension was likewise retuned. The YZ450FX’s front brake caliper, brake pads and front and rear brake rotors are also new for 2021.
The 2021 Yamaha YZ450FX is available for $9,699 in Team Yamaha Blue.

 
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Yamaha Announces 2021 YZ Cross Country Motorcycles
Yamaha?s Redesigned YZ...