With a new, more powerful engine, an upgraded frame, and the smartphone Power Tuner software to customize the YZ450FX Yamaha 2021 Powerful Off-Road Bike’s settings to suit your riding style and circumstances.
YZ450FX Yamaha 2021 Powerful Off-Road Bike – Features and Price
Top Features
The YZ450FXTM is based on Yamaha’s flagship motocross model, the YZ450F, but with numerous additional features and settings that make it the ideal GNCC®/Woods racer. Yamaha’s Power Tuner app, which is available for free and is industry-exclusive, brings the versatility and precise tunability of the GYTR® Power Tuner to your smartphone. For the utmost in track-side tune, make immediate fuelling and ignition timing adjustments and upload them to the bike.
The rider may rapidly switch between preset engine maps—loaded and adjusted in the Power Tuner app—to accommodate changing track and weather conditions using a handlebar-mounted map switch. When traction is restricted, Map 1 offers a more responsive, faster-revving engine, while Map 2 provides a smoother reaction, slower revving engine. The YZ450FX retains the simplicity of push-button starting for effortless restarts under pressure and relaxing riding when the clock isn’t ticking, thanks to a small starter motor and ultra-lightweight lithium battery.
In demanding GNCC® racing conditions, a high-compression cylinder head, forged piston, aggressive cam profiles, cylinder geometry, and more work together to offer riders the optimum power distribution. On all of our YZ® models, Yamaha utilizes KYB® spring-type forks, which have an industry-leading function and are simple to set up at the track—these forks are ready for the top step of the podium right out of the box.
Engine
The YZ450FX’s unique rearward-slanted cylinder design—complete with rear exhaust and forward-mounted intake system—includes a cylinder head that works with the frame geometry for optimal weight distribution. The engine has a straight intake tract, aggressive cam profiles, a high-compression “box bridge” piston design with DLC-coated piston pin, and more on the inside. Finally, the ECU settings of the YZ450FX are tailored to cross-country riders’ requirements.
The YZ450FX is equipped with a small electric starting technology that reduces restart times on the track and adds convenience in other areas. The device adds little weight and is powered by a high-capacity, ultra-lightweight four-cell lithium-ion battery. The Yamaha Power Tuner app is a free, industry-exclusive software that delivers the power of the new GYTR Power Tuner to your iOS® or Android® smartphone. The app lets the owners to adjust air or fuel mixture and ignition timing maps to tune engine performance for a variety of track conditions, record race log information, and monitor a range of data like maintenance and system diagnosis, engine run time, and more using wireless connectivity to talk to the motorcycle’s onboard CAN-bus network.
The rider may rapidly switch between preset engine maps—loaded and adjusted in the Power Tuner app—to accommodate changing track and weather conditions using a handlebar-mounted map switch. To guarantee optimal fuel atomization and power for various riding situations, the engine breathes via a 44mm Mikuni® throttle body supplied by a high-pressure electric pump. The wide-ratio 5-speed gearbox on the YZF450FX improves cross-country performance and allows for greater gearing flexibility in open terrain.
Chassis/Suspension
The top frame bracing offers rigidity and longevity, while the rear frame spars and cross country-tuned engine mounts help balance bump absorption, stiffness, and rider feel. The YZ450FX’s bodywork is attractive from top to bottom, with a vast 2.15 gallon mass-centralized fuel tank. The compact body design allows for a more comfortable knee grip and control sensation, while the smaller and lower seat allows the rider to move about more freely on the bike.
For race-winning handling performance, the industry-leading KYB® coil spring-type fork with speed-sensitive damping offers an excellent balance between handling and bump absorption. The KYB® shock with specially-tuned damping characteristics is used in the linkage type rear suspension to match the YZ450FX chassis with rear and front system settings for optimum GNCC® performance. With excellent stopping power and controllability, the large 270mm front disc brake and aggressive pad composition provide superb braking performance and machine control.
The YZ450FX is equipped with 18-inch rear wheels and enduro-specific tires for the best combination of traction and durability. The cross-sectional contour of each spin is computer-designed to save weight while maintaining durability.
Additional Features
Compared to the YZ450F motocrosser, the YZ450FX has a composite engine guard, an 18-inch rear tire, a sealed O-ring chain, a fuel level warning light, and a folding aluminum kickstand. The rubber-mounted 4-position adjustable handlebar clamps enhance comfort, decrease handlebar vibration, and enable riders to change the bar position, while the large 1-1/8″ handlebar is both robust and light. Yamaha’s integrated graphics are combined into the bodywork for long-term durability and resistance to peeling and damage.
New For 2021
New combustion chamber geometry with steeper valve angles, more aggressive cam profiles, a higher compression piston with low friction rings, a longer connecting rod, larger exhaust head pipe connector, a high flow air filter, a more efficient breather system, and more were added to the YZ450FX’s already powerful motor—all while fitting under a smaller and lighter frame.
The all-new flex characteristics of the YZ450FX aluminum frame provide riders with the ideal mix of precise cornering performance, traction, and bump stability. The 2021 YZ450FX raises rider confidence to new heights by fine-tuning the chassis rigidity balance with modifications to the lateral beams and engine cradle tube thickness, as well as the engine mounts, triple top clamp, and front axle.
To enhance cornering performance, traction, and bump absorption, the 2021 YZ450FX sports improved front and rear suspension that works in tandem with the new chassis. The rider can use the engine’s tremendous power with more confidence thanks to smoother chassis movement.
Redesigned pads and discs combine with a new, more robust front caliper and a smaller rear caliper to improve braking feel and controllability. The redesigned 240mm rear brake rotor conducts heat more effectively, resulting in more consistent performance while racing.
YZ450FX Yamaha 2021 Powerful Off-Road Bike – Price
The new YZ450FX Yamaha 2021 Powerful Off-Road Bike is available at $9,699 in the Team Yamaha Blue color option.
YZ450FX Yamaha 2021 Powerful Off-Road Bike – Technical Specifications
Engine
| Engine Type | 449cc liquid-cooled DOHC 4-stroke; 4 titanium valves |
| Bore x Stroke | 97.0mm × 60.9mm |
| Compression Ratio | 13.0:1 |
| Fuel Delivery | Mikuni® fuel injection, 44mm |
| Transmission | 5-speed; multi-plate wet clutch |
| Final Drive | Chain |
Chassis
| Front Suspension | KYB® spring-type fork with speed-sensitive damping; fully adjustable with 12.2 inches of travel |
| Rear Suspension | KYB® single shock; fully adjustable with 12.5 inches of travel |
| Front Brakes | Hydraulic disc of 270 mm |
| Rear Brakes | Hydraulic disc of 245 mm |
| Front Tires | 80/100-21 Dunlop® MX3S® |
| Rear Tires | 120/90-18 Dunlop® MX3S® |
Dimensions
| LxWxH | 85.6 inches x 32.5 inches x 50.4 inches |
| Seat Height | 37.6 inches |
| Wheelbase | 58.3 inches |
| Rake (Caster Angle) | 27-degree |
| Trail | 4.6 inches |
| Maximum Ground Clearance | 12.6 inches |
| Fuel Capacity | 2.2 gal |
| Wet Weight | 254 lb |
Other
| Warranty | 30 Day (Limited Factory Warranty) |
Conclusion
The new YZ450FX Yamaha 2021 Powerful Off-Road Bike is a unique dirt motorcycle with a mighty engine. The engine is known for its instant power delivery upon a slight twist of a throttle. The light frame helps in conquering rugged terrains with ease, while the seat gives maximum riders movement. The braking system works perfectly fine, and the suspension system provides better damping force.
