| TECHNICAL SPECIFICATION |
|---|
| Model ID |
|---|
| Manufacturer (Make) | Yamaha |
| Model Name | YFZ450X |
| Year | 2011 |
| Category(class) | ATV |
| Engine |
|---|
| Engine Capacity (Displacement) | 449 ccm (27.4 cubic inches) |
| Engine Type | Single cylinder, four-stroke |
| Bore x Stroke | Ø95.0 mm x 63.4 mm (Ø3.74 inches x 2.5 inches) |
| Bore/Stroke Ratio | 1.5 |
| Compression Ratio | 11.6:1 |
| Valves per Cylinder | 5 |
| Timing System | DOHC |
| Fuel System(Carburetion) | Injection. Yamaha Fuel Injection (YFI), 42mm |
| Ignition | Digital TCI: Transistor Controlled Ignition |
| Starter System | Electric |
| Cooling System | Liquid |
| Powertrain |
|---|
| Clutch | Drive Train |
| Gearbox | 5 speed |
| Transmission (Final Drive) | Chain |
| Chassis/Suspension/Brakes |
|---|
| Front Suspension | Independent double wishbone, w/Kashima coated piggyback shocks, High/Low speed compression, rebound and threaded preload adjustment, 9.4-in travel |
| Rear Suspension | Cast aluminum swingarm w/piggyback High/Low speed compression, rebound and threaded preload adjustment, 11.0-in travel |
| Front Brakes | Double disc |
| Rear Brakes | Single disc |
| Front Tire | 21/7-10 |
| Rear Tire | 20/10-9 |
| Dimensions |
|---|
| Overall Length | 1796 mm (70.71 inches) |
| Overall Width | 1171 mm (46.1 inches) |
| Overall Height | 1064 mm (41.89 inches) |
| Seat Height | 810 mm (31.89 inches) |
| Wheelbase | 1270 mm (50 inches) |
| Ground Clearance | 114 mm (4.49 inches) |
| Curb Weight | 181.4 kg (400 lb) |
| Fuel Capacity | 9.84 litres (2.6 gallons) |
| Performance |
|---|
| Top Speed | - |
| Acceleration (dart, speedup) time | |
| 0-100 km/h | - |
| 0-60 mph | - |
| 1/4 mile | - |
| 60 to 140 km/h, highest gear | - |
