2004 Yamaha YFZ450 Specifications
Engine:
| Engine configuration |
Single-Cylinder |
| How many cylinders |
1 |
| Types of power cycles |
Four-stroke |
| Type of cooling system |
Liquid / Air |
| Valves |
5 |
| Valves Per Cylinder |
5 |
| Valve types and configurations |
Double OverHead Camshaft |
| Bore (millimeters/inches) |
95 / 3.74 |
| Stroke (millimeters/inches) |
62 / 2.44 |
| Engine displacement (cubic centimeters/cubic inches) |
439 / 26.8 |
| Compression Ratio |
11.9:1 |
| Starter Type |
Electric |
| Fuel |
Regular |
| Type of Fuel |
Gas |
| Carb Model |
Keihin |
| Injector |
– |
| Carb |
+ |
| Number Of Carburetors |
1 |
| Carburetor Size (mm) |
39 |
| Carburetor system |
Carb |
Transmission:
| Transmission Type |
Manual |
| Number Of Speeds |
5 |
| Primary drive rear |
Chain |
| Reverse |
– |
| High low range selector |
– |
Wheels & Tires: Front (F), Rear (R):
| Rims material |
Aluminum |
| Tube / Tubeless |
Tubeless |
| F Tire Diameter |
21 |
| R Tire Diameter |
20 |
| Tire Brand |
Dunlop® |
| F Tire Width |
7 |
| F Wheel Diameter |
10 |
| R Tire Width |
10 |
| R Wheel Diameter |
9 |
| F Tire Brand |
AT 21 X 7-10 |
| R Tire Brand |
AT 20 X 10-9 |
Brakes:
| Front |
Dual Hydraulic Disc Brake |
| Front Brake Diameter (inches/millimeters) |
6.3 / 160 |
| Rear |
Hydraulic Disc Brake |
| Rear Brake Diameter (inches/millimeters) |
7.9 / 200 |
Suspension: Front (F), Rear (R):
| ATV F suspension system |
Independent Double Wishbone |
| F Travel (millimeters/inches) |
9.1 / 231.1 |
| Front Adjustable Fork Pre-Load |
+ |
| Front Adjustable Rebound Damping |
+ |
| Front Central Suspension Strut |
– |
| Steering Damper |
– |
| ATV R suspension system |
Swing Arm |
| R Travel (inches/millimeters) |
10.1 / 256.5 |
| Rear Adjustable Shock / Spring Pre-Load |
+ |
| Rear Adjustable Rebound Damping |
+ |
| ATV R shock absorbers |
1 |
| Rear Suspension Material |
Aluminum |
Steering:
| Steering system |
Manual |
| Steering controller |
Handlebar |
Technical Specifications:
| Overall length (foot) |
6.03 |
| Overall width (inches/millimeters) |
46.1 / 1170.9 |
| Overall heigth (inches/millimeters) |
42.9 / 1089.7 |
| Wheelbase (in/mm) |
50.4 / 1280.2 |
| Ground Clearance (in/mm) |
4.4 / 111.8 |
| Length (foot/foot) |
6 |
| Length (foot/inches) |
0.4 |
| ATV dry weight (pounds/kilograms) |
350 / 158.8 |
| Fuel tank capacity (gallons/liters) |
2.6 / 9.8 |
| Engine Displacement to Weight (cc) |
1.25 |
Seats:
| Seat Type |
One-Piece |
| Seat adjusting system |
– |
| Material |
Vinyl |
| Seat Location |
Driver |
| Folding seat |
– |
| Seat Height (in/mm) |
31.5 / 800.1 |
| ATV seats |
1 |
Exterior:
| ATV frame material |
Steel |
| Basic outside panels material |
Plastic |
| ATV handlebar grips |
Std |
| Foot Peg Location |
Driver |
| Front Fender |
Std |
| Rear Fender |
Std |
| Hand grips |
Std |
| Front Bumper |
Std |
| Rear Bumper |
Std |
| Bash Plate (Front) |
+ |
Pricing:
| Warranty (Months) |
6 |
| Battery Warranty (Mo.) |
0 |
Identification:
| ATV Type |
Sport |
| Made in |
Japan |
| Minimum manufacturer age recommended |
16 |
| Parent Company |
Yamaha |
| Full name |
YFZ450 |
Drive Line:
| Driveline Type |
4X2 |
| Number Of Driveline Modes |
1 |
| Rear Unlocking Differential |
– |
| Rear Solid Axle |
+ |
Lights:
| Halogen Headlight (s) |
Std |
| Headlight (s) |
Std |
| Type |
Halogen |
Paint & Finish: