2021 Yamaha YZ450F

Where To Buy
Free shipping on orders over $85.
Free shipping on orders over $100.
Free 3-day express shipping on orders over $79.
Bike Test: 2021 Yamaha YZ450F
With a massive redesign last year, the 2021 Yamaha YZ450F has no changes. But as they say, "Not broke? Don't fix it."

For 2021, Yamaha focused its laser beam of innovation on the 2021 YZ250F and left the YZ450F alone, which is fair since it was fully redesigned just last year. To recap the changes from 2019 to 2020, "The new 449cc, liquid-cooled, four-stroke, electric start engine features an all-new compact cylinder head with redesigned combustion chamber shape, steeper valve angles and more aggressive cam profiles. The reward-slanted cylinder houses a higher compression piston with low friction rings attached to a longer connecting rod. The transmission has been refined to provide smoother shifting, and a more efficient crank breather system has been adopted to decrease pumping losses." 

The frame was also changed, as well as engine hangers, triple clamps, and front axle. All of these changes carry over to the 2021 Yamaha YZ450F. The only new thing for this year is that you can get the 2021 YZ450F in a new colorway that they are calling a Monster Energy Edition. Ping was out at Glen Helen to spin some laps, so watch to video to see what he thinks of the blue machine. 


Post a reply to: Bike Test: 2021 Yamaha YZ450F


Yamaha YZ450F
Model Year
Engine Size
Engine Type
Engine Displacement
449cc liquid-cooled DOHC 4-stroke; 4 titanium valves
Bore x Stroke
97.0mm × 60.9mm
Compression Ratio
Fuel System
Mikuni® fuel injection, 44mm
5-speed; multiplate wet clutch
Final Drive
Suspension Front
KYB® spring-type fork with speed sensitive damping; fully adjustable, 12.2-in travel
Suspension Rear
KYB® single shock; fully adjustable, 12.5-in travel
Brakes Front
Hydraulic disc, 270mm
Brakes Rear
Hydraulic disc, 240mm
Tires Front
80/100-21 Dunlop® MX33®
Tires Rear
120/80-19 Dunlop® MX33®
Overall Length
86.0 in
Overall Width
32.5 in
Overall Height
50.2 in
Seat Height
38.0 in
58.3 in
Ground Clearance
13.0 in
27.0°/4.7 in
Fuel Capacity
1.6 gal
Curb Weight
245 lb
More Info
What do you think?
Where To Buy
Free shipping on orders over $85.
Free shipping on orders over $100.
Free 3-day express shipping on orders over $79.

More Products

The Latest

The Shop

The Latest