| General |
|
Year
|
2007
|
2007
|
|
Manufacturer
|
Yamaha
|
Yamaha
|
|
Model Name
|
YZ450F
|
YZ450F
|
|
Trim Name
|
Base
|
Base
|
|
Generic Type (Primary)
|
Off-Road
|
Off-Road
|
| Engine |
|
Engine
|
449cc liquid-cooled DOHC 4-stroke;5 titanium valves
|
449cc liquid-cooled DOHC 4-stroke;5 titanium valves
|
|
Bore
|
95.0mm
|
95.0mm
|
|
Stroke
|
63.4mm
|
63.4mm
|
|
Compression Ratio
|
12.3:1
|
12.3:1
|
|
Fuel System
|
FCR-MX39 x 1
|
FCR-MX39 x 1
|
|
Ignition
|
CDI
|
CDI
|
|
Transmission
|
Constant-mesh 5-speed; multiplate wet clutch
|
Constant-mesh 5-speed; multiplate wet clutch
|
|
Final Drive
|
Chain Drive
|
Chain Drive
|
| Chassis |
|
Front Suspension
|
Speed-Sensitive System inverted fork;fully adjustable, 11.8-in travel
|
Speed-Sensitive System inverted fork;fully adjustable, 11.8-in travel
|
|
Rear Suspension
|
Fully adjustable single shock; 12.4" travel
|
Fully adjustable single shock; 12.4" travel
|
|
Front braking system
|
Hydraulic single disc brake, 250mm
|
Hydraulic single disc brake, 250mm
|
|
Rear braking system
|
Hydraulic single disc brake, 245mm
|
Hydraulic single disc brake, 245mm
|
|
Front Tires / Model
|
80/100-21-51M
|
80/100-21-51M
|
|
Rear Tires / Model
|
110/90-19-62M
|
110/90-19-62M
|
| Dimensions |
|
Length
|
86.3 in
|
86.3 in
|
|
Width
|
32.5 in
|
32.5 in
|
|
Height
|
51.4 in
|
51.4 in
|
|
Seat Height
|
38.9 in
|
38.9 in
|
|
Wheelbase
|
58.8 in
|
58.8 in
|
|
Ground Clearance
|
14.7 in
|
14.7 in
|
|
Fuel Capacity
|
1.8 gal
|
1.8 gal
|
| Weights |
|
Dry Weight
|
220 lb
|
220 lb
|
| Other |
|
Main Jet
|
#160
|
#160
|
|
Main Jet
|
#200 (Air)
|
#200 (Air)
|
|
Note
|
Jet Needle - NFLR-4
|
Jet Needle - NFLR-4
|
|
Note
|
Needle Jet - N/ A
|
Needle Jet - N/ A
|
|
Note
|
Pilot Air Jet 1 - #100
|
Pilot Air Jet 1 - #100
|
|
Note
|
Pilot Outlet - 0.9
|
Pilot Outlet - 0.9
|
|
Pilot Jet
|
#45
|
#45
|
|
Reduction Ratio, Primary
|
61/23 (2.652)
|
61/23 (2.652)
|
|
Reduction Ratio, Secondary
|
49/13 (3.769)
|
49/13 (3.769)
|
|
Gear Ratios (overall) 1st
|
27/14 (1.929)
|
27/14 (1.929)
|
|
Gear Ratios (overall) 2nd
|
23/15 (1.533)
|
23/15 (1.533)
|
|
Gear Ratios (overall) 3rd
|
23/18 (1.278)
|
23/18 (1.278)
|
|
Gear Ratios (overall) 4th
|
24/22 (1.091)
|
24/22 (1.091)
|
|
Gear Ratios (overall) 5th
|
20/21 (0.952)
|
20/21 (0.952)
|
| Warranty |
|
Warranty
|
30 Day (Limited Factory Warranty)
|
30 Day (Limited Factory Warranty)
|
|
|
|
|
