Yamaha YZ450FSP - 2021 Specifications and Reviews
The 2021 Yamaha YZ450FSP is a competition-focused motocross machine built for serious amateur and professional riders seeking maximum performance. Powered by a 449cc liquid-cooled four-stroke engine with titanium valves and aggressive 13.0:1 compression, it delivers strong power delivery across the rev range. Known for its responsive handling and reliable Mikuni fuel injection, this bike excels in both amateur racing and training environments.
2021
General information | |
| Category | Cross / motocross |
| Year | 2021 |
| Model | Yamaha YZ450FSP |
Engine and Transmission Specifications | |
| Clutch | Multiplate wet clutch |
| Transmission type | Chain (final drive) |
| Gearbox | 5-speed |
| Cooling system | Liquid |
| Lubrication system | Wet sump |
| Ignition | TCI: Transistor Controlled Ignition |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel system | Injection. Mikuni® fuel injection, 44mm |
| Valves per Cylinder | 4 |
| Bore x Stroke | 97.0 x 60.9 mm (3.8 x 2.4 inches) |
| Compression | 13.0:1 |
| Engine details | Titanium-valves |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 449.0 ccm (27.40 cubic inches) |
| | |
Brakes, suspension, Frame and wheels | |
| Seat | Long, two-tone, motocross-style seat |
| Wheels | Dunlop® MX33® tyres |
| Rear brakes | Single disc. Hydraulic. |
| Diameter | 270 mm (10.6 inches) |
| Front brakes | Single disc. Hydraulic. |
| Rear tire | 120/80-19 |
| Front tire | 80/100-21 |
| Rear wheel travel | 317 mm (12.5 inches) |
| Rear Suspension | KYB® single shock; fully adjustable |
| Front wheel travel | 310 mm (12.2 inches) |
| Front Suspension | KYB Speed-Sensitive System, inverted fork: fully adjustable |
| Trail | 119 mm (4.7 inches) |
| Rake (fork angle) | 27.0° |
| Frame type | Bilateral beam frame, aluminum |
Physical measures and capacities | |
| Fuel capacity | 6.20 litres (1.64 US gallons) |
| Wheelbase | 1481 mm (58.3 inches) |
| Ground clearance | 330 mm (13.0 inches) |
| Overall width | 825 mm (32.5 inches) |
| Overall length | 2185 mm (86.0 inches) |
| Overall height | 1275 mm (50.2 inches) |
| Seat height | 965 mm (38.0 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 111.0 kg (244.7 pounds) |
Other specs | |
| Starter | Electric |
| Color options | Monster Energy Yamaha Racing Edition |
Rider Reviews
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