Yamaha YZ450F - 2021 Specifications and Reviews

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General information
Category	Cross / motocross
Year	2021
Model	Yamaha YZ450F

Engine and Transmission Specifications
Clutch	Multiplate wet clutch
Transmission type	Chain (final drive)
Gearbox	5-speed
Cooling system	Liquid
Lubrication system	Wet sump
Ignition	TCI: Transistor Controlled Ignition
Fuel control	Double Overhead Cams/Twin Cam (DOHC)
Fuel system	Injection. MikuniÂ® fuel injection, 44mm
Valves per Cylinder	4
Bore x Stroke	97.0 x 60.9 mm (3.8 x 2.4 inches)
Compression	13.0:1
Engine details	Titanium-valves
Engine type	Single cylinder, four-stroke
Capacity:	449.0 ccm (27.40 cubic inches)
Brakes, suspension, Frame and wheels
Seat	Long, two-tone, motocross-style seat
Wheels	DunlopÂ® MX33Â® tyres
Rear brakes	Single disc. Hydraulic.
Diameter	270 mm (10.6 inches)
Front brakes	Single disc. Hydraulic.
Rear tire	120/80-19
Front tire	80/100-21
Rear wheel travel	318 mm (12.5 inches)
Rear Suspension	KYBÂ® single shock; fully adjustable
Front wheel travel	310 mm (12.2 inches)
Front Suspension	KYB Speed-Sensitive System, inverted fork: fully adjustable
Trail	119 mm (4.7 inches)
Rake (fork angle)	27.0°
Frame type	Bilateral beam frame, aluminum

Physical measures and capacities
Fuel capacity	6.06 litres (1.60 US gallons)
Wheelbase	1486 mm (58.5 inches)
Ground clearance	330 mm (13.0 inches)
Overall width	826 mm (32.5 inches)
Overall length	2184 mm (86.0 inches)
Overall height	1275 mm (50.2 inches)
Seat height	965 mm (38.0 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc	111.1 kg (245.0 pounds)
Other specs
Comments	Launch control. Power Tuner via smartphone.
Factory warranty	30 Day Limited Factory Warranty
Starter	Electric
Color options	Team Yamaha Blue

Rider Reviews

Total comments: 1

MotorcycleDB Review

The 2021 Yamaha YZ450F motorcycle is a game-changer in the world of motocross bikes. With its powerful 449cc engine, advanced suspension system, and lightweight design, this bike is built to dominate the track. The electric start and precise handling make it easy for riders to maintain control and push the limits of their performance. Whether you're a seasoned racer or a weekend warrior, the YZ450F offers an exhilarating ride that will leave you craving more. In addition to its impressive performance features, the 2021 Yamaha YZ450F motorcycle also boasts a sleek and modern design that is sure to turn heads. The bold graphics and aggressive styling make a statement on the track, while the ergonomic layout ensures a comfortable and confident ride. With its cutting-edge technology and innovative engineering, the YZ450F sets a new standard for motocross bikes in 2021. If you're looking for a bike that delivers top-tier performance and unmatched style, the 2021 Yamaha YZ450F is the perfect choice.