Yamaha dirt bikes are known for their excellent performance on off-road terrains. Yamaha Bikes are equipped with powerful engines, responsive handling, and durable suspension systems, making them suitable for various types of off-road riding, from trail riding to motocross racing.
2023 YZ450F and YZ250F are two of the best dirt bike models from Yamaha which are popular at all levels. Here are the main differences between the YZ450F and YZ250F:
The YZ450F features a 450cc liquid-cooled, 4-stroke, DOHC single-cylinder engine. It has a larger engine displacement, providing more power and torque. On the other hand, YZ250F has a 250cc liquid-cooled, 4-stroke, DOHC single-cylinder engine. It is smaller in displacement compared to the YZ450F.
Yamaha YZ450F
Yamaha YZ450F comes with a 450cc liquid-cooled DOHC 4-stroke engine featuring 4 titanium valves, this motorcycle delivers unmatched power and precision. The meticulous measurements of 97.0mm × 60.8mm for bore x stroke and a compression ratio of 13.0:1 ensure optimal performance on the racetrack. Thanks to the advanced Mikuni® fuel injection system (44mm), fuel delivery is seamless, offering a smooth and responsive throttle, a crucial factor for riders seeking that competitive edge.
In essence, the 2023 Yamaha YZ450F is not just a motorcycle; it’s a testament to Yamaha’s commitment to innovation and excellence. It embodies the spirit of speed, control, and the pursuit of victory, making it a top choice for riders who crave the thrill of the race.
Yamaha YZ250F
Yamaha YZ250F boasts a range of advanced features that make it a standout choice for motocross enthusiasts. One of its key highlights is its powerful 250cc four-stroke engine, renowned for its broad powerband, low-end torque, and mid-range power.
Yamaha’s innovative Power Tuner App enhances the bike’s tunability, allowing riders to make instant fueling and ignition timing adjustments via their smartphones. The YZ250F is built on an advanced bilateral aluminum frame, strategically designed to centralize mass and provide an optimal balance between cornering agility and straight-line stability. Its high-performance braking system, borrowed from the YZ450F, ensures exceptional stopping power and precise control.
The bike also features an electric starter system, making restarts effortless and stress-free. Additionally, the YZ250F stands out with its sharp and durable graphics scheme, emphasizing its racing pedigree and adding to its aggressive appearance. These top-notch features collectively make the Yamaha YZ250F a top contender in the motocross arena, promising riders a thrilling and reliable experience on the track.
Yamaha YZ450F vs YZ250F Specs
The Yamaha YZ450F and Yamaha YZ250F are both high-performance dirt bikes designed for off-road enthusiasts. Both bikes feature a 4-stroke, liquid-cooled, single-cylinder, DOHC, 4-valve engine configuration. However, there are significant differences in their specifications.
Engine
The YZ450F boasts a larger displacement of 449 CC, generating a maximum power of 53.6 horsepower and a torque of 30.5 ft-lbs. With a bore x stroke of 97.0 mm x 60.8 mm and a compression ratio of 13.0:1, it offers impressive power and torque for riders seeking an adrenaline-packed experience. The bike features a 5-speed transmission, a chain final drive, and utilizes fuel injection for efficient performance.
On the other hand, the YZ250F has a smaller 249 CC engine that produces a maximum power of 39.5 horsepower and a torque of 18.0 ft-lbs. Its engine has a bore x stroke of 77.0 mm x 53.6 mm and a higher compression ratio of 13.8:1. Like its counterpart, it also features a 5-speed transmission, a chain final drive, and employs fuel injection for optimized fuel delivery.
| Specification | Yamaha YZ450F | Yamaha YZ250F |
| Type | 4-stroke, liquid-cooled, single-cylinder, DOHC, 4-valve | 4-stroke, liquid-cooled, single-cylinder, DOHC, 4-valve |
| Bore x Stroke | 97.0 mm x 60.8 mm | 77.0mm×53.6mm |
| Displacement | 449 CC | 249 CC |
| Compression Ratio | 13.0:1 | 13.8:1 |
| Maximum Power | 53.6 horsepower | 39.5 horsepower |
| Maximum Torque | 30.5 ft-lbs | 18.0 ft-lbs |
| Transmission | 5-speed | 5-Speed |
| Final Drive | Chain | Chain |
| Clutch | Wet multi-disc | Wet multi-disc |
| Ignition | Electric | Electric |
| Fuel System | Fuel injection | Fuel injection |
Chassis
| Specification | Yamaha YZ450F | Yamaha YZ250F |
| Frame | Aluminum Bilateral Beam | Aluminum Bilateral Beam |
| Front Suspension | KYB® spring-type fork with speed sensitive damping; fully adjustable, 12.2-in travel | KYB® Speed-Sensitive System; Inverted Forks; Fully Adjustable Compression and Rebound Damping; 12.2 in Travel |
| Rear Suspension | KYB® single shock; fully adjustable, 12.4-in travel | KYB® Fully Adjustable Shock; 12.5 in Travel |
| Front Brake | Hydraulic Disc, 270mm | Hydraulic Disc, 270mm |
| Rear Brake | Hydraulic Disc, 240mm | Hydraulic Disc, 240mm |
| Front Tire | 80/100-21 Dunlop® Geomax MX33F | 80/100-21 Dunlop® Geomax MX33F |
| Rear Tire | 120/80-19 Dunlop® Geomax MX33 | 110/90-19 Dunlop® Geomax MX33 |
Dimensions
Dimensionally both the models are very close to each other like Fuel Capacity, Seat Height, Wheelbase and many more.
| Specification | Yamaha YZ450F | Yamaha YZ250F |
| L x W x H | 85.6 in x 32.5 in x 50.6 in | 85.8 in x 32.5 in x 50.2 in |
| Seat Height | 38.2 in | 38.2 in |
| Wheelbase | 58.1 in | 58.1 in |
| Rake (Caster Angle) | 26.8° | 26.8° |
| Trail | 4.7 in | 4.7 in |
| Maximum Ground Clearance | 13.2 in | 13.2 in |
| Fuel Capacity | 1.6 gal | 1.6 gal |
| Wet Weight | 234 lb | 234 lb |
Yamaha YZ450F Photos
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Yamaha YZ250F Photos
In summary, the Yamaha YZ450F offers more power and torque due to its larger engine displacement and lower compression ratio. On the other hand, the Yamaha YZ250F, with its slightly smaller engine and higher compression ratio, provides a balanced performance, making it an excellent option for riders looking for a combination of power and agility on the off-road terrain.