Comparison of Yamaha YFZ450X 2011 and Yamaha YFZ450X 2010 [S]ave
| Attribute |  Yamaha YFZ450X 2011 × |  Yamaha YFZ450X 2010 × |
|---|---|---|
| General | ||
| Production from (year) | 2011 | 2010 |
| Make | Yamaha | Yamaha |
| Model | Yamaha YFZ450X | Yamaha YFZ450X |
| Category | ATV | ATV |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | V2, four-stroke |
| Valves per cylinder | 5 | 5 |
| Fuel system | Injection. Yamaha Fuel Injection (YFI), 42mm | Injection. Yamaha Fuel Injection (YFI), 42mm |
| Engine details | Liquid Cooled w/Fan, Titanium 5-Valve DOHC | - |
| Displacement (cm³) | 449 | 449 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 95 | 95 |
| Stroke (mm) | 63.4 | 63.4 |
| Gearbox | 5-speed | 5-speed |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) | Double Overhead Cams/Twin Cam (DOHC) |
| Driveline | 2WD; Sealed O-Ring Chain, Eccentric Adjustment | - |
| Ignition | Digital TCI: Transistor Controlled Ignition | Digital TCI: Transistor Controlled Ignition |
| Clutch | Drive Train | - |
| Compression | 11.6:1 | 11.6:1 |
| Chassis | ||
| Front suspension | Independent double wishbone, w/Kashima coated piggyback shocks, High/Low speed compression, rebound and threaded preload adjustment, 9.4-in travel | 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 | Cast aluminum swingarm w/piggyback High/Low speed compression, rebound and threaded preload adjustment, 11.0-in travel |
| Front brakes | Double disc | Double disc |
| Rear brakes | Single disc | Single disc |
| Front tyre | 21/7-10 | 21/7-AT10 |
| Rear tyre | 20/10-9 | 20/10-AT9 |
| Other | ||
| Starter | Electric | Electric |
| Color options |
|
|
| Light | Dual 30W Krypton multireflector Headlights and 3.9/0.5W LED Brake light | - |
| Dimensions | ||
| Wheelbase (mm) | 1,270 | 1,270 |
| Kerb weight (kg) | 181.4 | 181.4 |
| Overall height (mm) | 1,064 | 1,064 |
| Overall length (mm) | 1,796 | 1,796 |
| Overall width (mm) | 1,171 | 1,171 |
| Seat height (mm) | 810 | 810 |
| Ground clearance (mm) | 114 | 114 |
| Performance | ||
| Fuel capacity (l) | 9.84 | 9.84 |
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