| Attribute | Value |
| General |
| Production from | 2011 year |
| Make | Yamaha |
| Model | Yamaha YFZ450X SE |
| Category | ATV |
| Engine and transmission |
| Engine type | Single cylinder, four-stroke |
| Valves per cylinder | Add |
| Fuel system | Injection. Yamaha Fuel Injection (YFI), 42mm |
| Engine details | Add |
| Displacement | 449 cm³ |
| Power | Add |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Liquid |
| Transmission type,final drive | Chain |
| Torque | Add |
| Bore | 95 mm |
| Stroke | 63.4 mm |
| Gearbox | 5-speed |
| Greenhouse gases | Add |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Emission details | Add |
| Driveline | 2WD; Sealed O-Ring Chain, Eccentric Adjustment |
| Ignition | Transistor Controlled Ignition |
| Clutch | Add |
| Lubrication system | Add |
| Compression | 11.6:1 |
| Exhaust system | Add |
| Chassis |
| Front suspension | Independent double wishbone, w/Kashima coated piggyback shocks, High/Low speed compression, rebound |
| 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 |
| Diameter | Add |
| Frame type | Add |
| Front tyre | 21/7-10 |
| Rear tyre | 20/10-9 |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | Add |
| Rear wheel travel | Add |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Electric |
| Color options | |
| Carrying capacity | Add |
| Light | Dual 30W Krypton multireflector Headlights and 3.9/0.5W LED Brake light |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,270 mm |
| Kerb weight | 181.4 kg |
| Dry weight | Add |
| Power/weight ratio | Add |
| Overall height | 1,064 mm |
| Overall length | 1,796 mm |
| Overall width | 1,171 mm |
| Seat height | 810 mm |
| Alternate seat height | Add |
| Ground clearance | 114 mm |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | Add |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 9.84 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |