14 August. Friday 2026
Yamaha YZ450 FX - 2021 Specifications and Reviews
The 2021 Yamaha YZ450 FX is a competition-focused enduro bike built for serious off-road riders seeking maximum performance and reliability. Its potent 450cc four-stroke engine with titanium valves and fuel injection delivers strong power delivery across varied terrain. Known for aggressive handling and championship-winning capability, this machine excels in technical cross-country and off-road competition environments.
2021
General information | |
| Price as new | Do you know this bike?Click here to rate it. We miss 1 vote to show the rating. |
| Category | Enduro / offroad |
| Year | 2021 |
| Model | Yamaha YZ450 FX |
Engine and Transmission Specifications | |
| Driveline | O-ring chain |
| Clutch | Wet multi-disc |
| Transmission type | Chain (final drive) |
| Gearbox | 5-speed |
| Cooling system | Liquid |
| Lubrication system | Wet sump |
| Ignition | TCI |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel system | Injection. Mikuni® 44mm |
| Valves per Cylinder | 4 |
| Bore x Stroke | 97.0 x 60.9 mm (3.8 x 2.4 inches) |
| Compression | 12.8:1 |
| Engine details | Titanium valves |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 449.7 ccm (27.44 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Wheels | Dunlop® MX3S tyres |
| Rear brakes | Single disc. Hydraulic |
| Diameter | 270 mm (10.6 inches) |
| Front brakes | Single disc. Hydraulic |
| Rear tire | 120/90-18 |
| Front tire | 80/100-21 |
| Rear wheel travel | 318 mm (12.5 inches) |
| Rear Suspension | KYB® single shock; full adjustable |
| Front wheel travel | 310 mm (12.2 inches) |
| Front Suspension | KYB® spring-type fork with speed sensitive damping; fully adjustable |
| Trail | 117 mm (4.6 inches) |
| Rake (fork angle) | 27.2° |
| Frame type | Aluminum Bilateral Beam frame |
| | |
Physical measures and capacities | |
| Fuel capacity | 8.33 litres (2.20 US gallons) |
| Wheelbase | 1481 mm (58.3 inches) |
| Ground clearance | 335 mm (13.2 inches) |
| Overall width | 826 mm (32.5 inches) |
| Overall length | 2174 mm (85.6 inches) |
| Overall height | 1280 mm (50.4 inches) |
| Seat height | 955 mm (37.6 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 115.2 kg (254.0 pounds) |
| | |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Comments | Power Tuner app |
| Factory warranty | 30 Day Limited Factory Warranty |
| Electrical | Lithium battery |
| Starter | Electric |
| Color options | Team Yamaha Blue |
Performance Profile & Rider Fit
Best For
Track40%
City10%
Cornering70%
Daily Riding15%
Touring20%
Passenger5%
Rider Profile
| Best For | This is a serious off-road weapon best suited to intermediate to advanced riders who already have dirt bike experience. |
| Purpose | Built for enduro racing and technical trail riding rather than commuting or leisurely road use. |
| Rider Fit | Tall 37.6-inch seat height and a light but powerful 450cc single demand decent rider fitness, leg length, and confidence standing on the pegs. |
| Character | Explosive, high-revving, and razor-sharp in handling, rewarding aggressive, committed riding over technical terrain. |
| Not Ideal For | Not a good fit for new riders, shorter riders, or anyone wanting a comfortable, low-maintenance road or touring machine. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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Rider Reviews
Total comments: 1
MotorcycleDB Review
The 2021 Yamaha YZ450 FX motorcycle is an impressive off-road machine that delivers power, agility, and durability. With a 450cc engine, this bike offers plenty of torque and acceleration for conquering tough trails and challenging terrain. The lightweight design and advanced suspension system make it easy to handle and control, while the electric start and smooth shifting transmission add convenience and performance. Whether you're a seasoned rider or a newcomer to off-road adventures, the YZ450 FX is a reliable and capable choice for tackling the great outdoors. Overall, the 2021 Yamaha YZ450 FX motorcycle is a top-notch off-road bike that delivers power, agility, and durability. With a 450cc engine, this bike offers plenty of torque and acceleration for conquering tough trails and challenging terrain. The lightweight design and advanced suspension system make it easy to handle and control, while the electric start and smooth shifting transmission add convenience and performance. Whether you're a seasoned rider or a newcomer to off-road adventures, the YZ450 FX is a reliable and capable choice for tackling the great outdoors.Add a Comment
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