| General |
|
Year
|
2018
|
2018
|
|
Manufacturer
|
Yamaha
|
Yamaha
|
|
Model Name
|
YZ450F
|
YZ450F
|
|
Trim Name
|
Base
|
Base
|
|
Generic Type (Primary)
|
Off-Road
|
Off-Road
|
| Engine |
|
Engine Type
|
DOHC 4-stroke; 4 titanium valves
|
DOHC 4-stroke; 4 titanium valves
|
|
Displacement
|
449cc
|
449cc
|
|
Cooling System
|
liquid-cooled
|
liquid-cooled
|
|
Bore
|
97.0mm
|
97.0mm
|
|
Stroke
|
60.8mm
|
60.8mm
|
|
Compression Ratio
|
12.8:1
|
12.8:1
|
|
Fuel System
|
Mikuni® fuel injection, 44mm
|
Mikuni® fuel injection, 44mm
|
|
Ignition
|
TCI: Transistor Controlled Ignition
|
TCI: Transistor Controlled Ignition
|
|
Final Drive
|
Chain
|
Chain
|
| Drivetrain |
|
Transmission
|
Constant-mesh 5-speed; multiplate wet clutch
|
Constant-mesh 5-speed; multiplate wet clutch
|
| Suspension |
|
Front Suspension
|
KYB® Speed-Sensitive System inverted fork; fully adjustable
|
KYB® Speed-Sensitive System inverted fork; fully adjustable
|
|
Front Travel (in./cm.)
|
12.2-in
|
12.2-in
|
|
Rear Suspension
|
KYB® single shock; fully adjustable
|
KYB® single shock; fully adjustable
|
|
Rear Travel (in./cm.)
|
12.5-in
|
12.5-in
|
| Brakes |
|
Front braking system
|
Hydraulic disc, 270mm
|
Hydraulic disc, 270mm
|
|
Rear braking system
|
Hydraulic disc, 245mm
|
Hydraulic disc, 245mm
|
| Wheels & Tires |
|
Front Tires / Model
|
80/100-21 Dunlop® MX3S®
|
80/100-21 Dunlop® MX3S®
|
|
Rear Tires / Model
|
120/80-19 Dunlop® MX3S®
|
120/80-19 Dunlop® MX3S®
|
| Dimensions |
|
Length
|
86.0 in
|
86.0 in
|
|
Width
|
32.5 in
|
32.5 in
|
|
Height
|
50.6 in
|
50.6 in
|
|
Seat Height
|
38.6 in
|
38.6 in
|
|
Wheelbase
|
58.5 in
|
58.5 in
|
|
Raking Angle Degrees
|
27.33°
|
27.33°
|
|
Trail
|
4.7 in
|
4.7 in
|
|
Ground Clearance
|
13.0 in
|
13.0 in
|
| Capacities |
|
Fuel Capacity
|
1.6 gal
|
1.6 gal
|
| Weights |
|
Weight
|
Wet: 245 lb
|
Wet: 245 lb
|
| Warranty |
|
Warranty
|
30 Day (Limited Factory Warranty)
|
30 Day (Limited Factory Warranty)
|
|
|
|
|
