Motocross Bikes
2025Yamaha YZ450F
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The 2025 Yamaha YZ450F is a competitive motocross machine engineered for serious off-road racers and experienced riders seeking maximum performance. Its potent liquid-cooled 450cc four-stroke engine with titanium valves and advanced fuel injection delivers aggressive power delivery and reliability on demanding terrain. Known for its responsive handling and battle-proven platform, it remains a top choice for competitive motocross and high-level trail riding.
- Capacity
- 450.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 99.3 kg
- Seat height
- 965 mm
- Power
- 56.0 HP (41.2 kW)
What’s new for the 2025 Yamaha YZ450F
vs the 2024| Spec | 2024 | 2025 |
|---|---|---|
| Torque | 45.8 Nm (4.7 kgf-m or 33.8 ft.lbs) @ 7200 RPM | 44.7 Nm (4.6 kgf-m or 33.0 ft.lbs) @ 7700 RPM |
Other years
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for motocross racing and hard off-road riding, excelling on tracks and rough terrain rather than street use.
- Built for
- Sharp, high-revving, and razor-responsive, it rewards committed, active riding with explosive acceleration and precise cornering manners.
- Not ideal for
- It is not suited for commuting, touring, passengers, or casual low-speed street riding due to its lack of lights, mirrors, and road-going comfort features.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 450.0 ccm
- Power
- 56.0 HP (41.2 kW)
- Torque
- 44.7 Nm (4.6 kgf-m) @ 7700 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.5639 HP/kg (dry)
- Bore x stroke
- 97.0 x 60.8 mm
- Compression
- 13.0:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- TCI
- Valves per cylinder
- 4
- Lubrication system
- Wet sump
- Spark plugs
- NGK CPR8EA-9
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Multiplate, wet
- Chain size
- 520
Dimensions & weight
- Wheelbase
- 1481 mm
- Overall length
- 2179 mm
- Overall width
- 831 mm
- Overall height
- 1275 mm
- Seat height
- 965 mm
- Dry weight
- 99.3 kg
- Wet weight
- 108.9 kg
- Fuel capacity
- 6.10 litres
- Ground clearance
- 351 mm
- Oil capacity
- 1.00 litres
Chassis & suspension
- Frame
- Bilateral beam frame, aluminum
- Front suspension
- KYB Speed-Sensitive System, inverted fork: fully adjustable
- Rear suspension
- KYB® single shock; fully adjustable
- Front wheel travel
- 310 mm
- Rear wheel travel
- 315 mm
- Rake (fork angle)
- 26.9°
- Trail
- 119 mm
Brakes & wheels
- Front brakes
- Single disc. Hydraulic.
- Front brakes diameter
- 270 mm
- Rear brakes
- Single disc. Hydraulic.
- Rear brakes diameter
- 245 mm
- Front tyre
- 80/100-21
- Rear tyre
- 120/80-19
- Brake fluid
- DOT 4
Other
- Color options
- Team Yamaha Blue
- Comments
- Torque is a rear-wheel dyno figure.
Specs last verified against published sources: .
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2004 | 2010 | 2016 | 2021 | 2025 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 449 cc | 450 cc | 450 cc |
| Dry weight | 97 kg | 99 kg | 99 kg | 99 kg | 99 kg | 99 kg |
| Seat height | 995 mm | 998 mm | 975 mm | 965 mm | 965 mm | 965 mm |
| Fuel capacity | 6.8 L | 6.1 L | 7.6 L | 6.1 L | 6.1 L | 6.1 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Yamaha YZ450F?
The 2025 Yamaha YZ450F has a Capacity of 450.0 ccm (27.46 cubic inches).
What engine power does the Yamaha YZ450F have?
The 2025 Yamaha YZ450F has a Power of 56.0 HP (41.2 kW).
How many gears does the Yamaha YZ450F have?
The 2025 Yamaha YZ450F has a Gearbox of 5-speed.
What is the torque of the Yamaha YZ450F?
The 2025 Yamaha YZ450F has a Torque of 44.7 Nm (4.6 kgf-m or 33.0 ft.lbs) @ 7700 RPM.
How much does the Yamaha YZ450F weigh?
The 2025 Yamaha YZ450F has a Dry weight of 99.3 kg (218.9 pounds).
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