| MODEL | YAMAHA YZ450F 2023 - 2025 |
| Year | 2023 - 2025 |
| Engine Type | Single cylinder, 4-stroke, DOHC, 4 titanium valves |
| Displacement / Capacity | 450 cc |
| Bore X Stroke | 97.0 x 60.8 mm |
| Compression Ratio | 13.0:1 |
| Cooling System | Liquid cooled |
| Max Power | — |
| Max Torque | — |
| Ignition | TCI |
| Induction | Fuel injection, 44 mm throttle body |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Dry sump |
| Gear Box | 5-speed, constant mesh |
| Clutch | Wet, multiple disc |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Aluminium bilateral beam |
| Front Suspension | Fully adjustable 48 mm inverted fork, 310 mm / 12.2 in travel |
| Rear Suspension | Fully adjustable linkage-type shock, 317 mm / 12.4 in travel |
| Front Brakes | Single 270 mm hydraulic disc, twin-piston caliper |
| Rear Brakes | Single 240 mm hydraulic disc, single-piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2,180 mm / 85.8 in |
| Overall Width | 830 mm / 32.7 in |
| Overall Height | 1,275 mm / 50.2 in |
| Seat Height | 965 mm / 38.0 in |
| Wheelbase | 1,480 mm / 58.3 in |
| Ground Clearance | 350 mm / 13.8 in |
| Dry Weight | — |
| Wet Weight | 109 kg / 240 lb |
| WHEEL SPECS | |
| Front Tyre | 80/100-21 51M, tube type |
| Rear Tyre | 120/80-19 63M, tube type |
| FUEL SYSTEM | |
| Fuel Capacity | 6.2 Litres / 1.6 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The YZ450F is Yamaha's full-size four-stroke motocross bike. This eighth-generation version, introduced for 2023, has a reworked dry-sump engine with a higher rev limit and a lighter, refined aluminium chassis, aimed at making the bike easier to ride fast. It is sold in Team Yamaha Blue and as a Monster Energy Yamaha Racing Edition in different livery, with the same mechanicals; the Monster Energy edition (2021 - 2025), 60th Anniversary (2016), Team Replica (2009) and 50th Anniversary (2024) liveries are listed as siblings on this page and are cosmetic editions of the base model.
