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Yamaha YZ450F

Yamaha YZ450F

The 2021 Monster Energy Star Racing Yamaha YZ450F is a production-based motorcycle and the product of years of testing and development by Yamaha Motor Corporation engineers. The 2021 YZ450F has been redefined over the years with industry-exclusive features and technologies. It utilizes a compact, 450cc motor, a thoroughly refined and balanced chassis, and customizable ergonomics which will give the rider the ability to perform at their best.

Every upgrade on the Monster Energy Star Racing Yamaha YZ450F serves the purpose of either improving performance or reducing weight. Engine performance is tailored to each rider by using customized camshafts, cylinder head porting, transmission ratios, and primary ratios. Vortex ignition systems allow for infinite engine mapping adjustments which ensure that the optimum power is delivered at the optimum time. Factory KYB suspension supplies the riders with the adjustability required to meet the demands of any Supercross track.

Working closely with Yamaha engineers in developing performance components, team sponsors provide added benefits to the race team as their products further strengthen the bike’s performance. The Monster Energy Star Racing Yamaha Team will continue to develop and test elements throughout the year to ensure that the YZ450F maintains its competitive edge, excelling at performance and durability.


Model YZ450F  
Engine Type 450cc liquid-cooled DOHC 4-stroke, 4 valves  
Displacement 450cc  
Bore x Stroke 97 x 60.8 mm  
Compression ratio 13.0: 1  
Lubrication system Wet Sump, Yamalube Full Synthetic  
Clutch type Rekluse (Torque Drive) wet, multiple-disc  
Fuel system OEM Standard  
Ignition system GYTR Power Tuner  
Starter system OEM Electric  
Transmission system Constant-mesh 5-speed  
Final transmission 13 / 49


Frame Semi double cradle  
Chassis OEM Standard  
Front suspension Telescopic fork,KYB  
Front travel 310mm  
Caster angel 26.55°  
Trail 120mm  
Rear suspension Swingarm (link suspension, KYB)  
Rear travel 315mm  
Front brake Hydraulic single disc brake, Braking 270 mm  
Rear brake Hydraulic single disc brake, Braking 240mm  
Front tyre Dunlop MX33F  
Rear tyre Dunlop MX33


Overall length 2185 mm
Overall width
825 mm
Overall height
1285 mm
Seat height
965 mm
Wheel base
Minimum ground clearance
330 mm
Wet weight
111 Kg
Fuel tank capacity
6.2 Liter
Oil capacity
0.90 Liter