As Steve Nessl, Yamaha’s motorsports marketing manager said: “The 2020 Yamaha YZ450F features design changes which resulted in a lighter, faster and more nimble handling machine that will once again raise the bar in the 450 class”. He also added, “Yamaha’s 2020 lineup of four-stroke motocross bikes boast the most advanced, race-ready machines of their respective classes.”
In 2020, Yamaha will add to their family six racing motocross bikes; 2 of them are 4 strokes, YZF 450 (10.599 $ / 9.399 €) and YZF 250 (9799 $ / 8.699 €). The other four, 2 strokes, YZ 250 (9299 $ / 8199 €), YZ 125 (8399 $ / 7399 €), YZ 85 (5299 $ / 4699 €) and YZ 65 (4999 $ / 4.299 €). Approximately prices.
The YZF 449cc model; 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.
YZF 450cc let us enjoy a newly designed front brake caliper, brake pads, and front and rear disc, increasing its power output with a more controllable linear acceleration and decreasing its weight.
The seat on the YZ450F sits over a half-inch lower than last year model. The seat is now right at 38.0 inches, down by 0.6 inches. Yamaha’s YZ450F weight is the same, 245 pounds.
2020 Yamaha YZ450F Specifications
Type: 4-stroke single
Bore x stroke: 97.0 × 60.9mm
Compression ratio: 13.0:1
Valvetrain: DOHC, 4 titanium valves
Fueling: 44mm Mikuni throttle bodies
Final drive: Chain
Frame: Aluminum twin-beam
Front suspension: Fully adjustable inverted KYB Speed-Sensitive System fork; 12.2 inches of travel
Rear suspension: Linkage-assisted fully adjustable KYB piggyback-reservoir shock; 12.5 inches of travel
Tires: Dunlop Geomax MX33
Front tire: 80/100 x 21
Rear tire: 120/80 x 19
Front brake: 270mm disc
Rear brake: 240mm disc
DIMENSIONS and CAPACITIES
Wheelbase: 58.3 inches
Rake: 27.0 degrees
Trail: 4.7 inches
Seat height: 38.0 inches
Ground clearance: 13.0 inches
Fuel capacity: 1.6 gallons
Wet weight 245 pounds
Colors: Team Yamaha Blue or gray