Motocross Bikes
2026Yamaha YZ450FX
38 fields on record
The 2026 Yamaha YZ450FX is a versatile 450cc 4-stroke designed for serious off-road riders seeking a capable trail and enduro machine. Its liquid-cooled DOHC engine with advanced fuel injection delivers strong performance across varied terrain, while the compact 251-pound chassis offers excellent maneuverability and control for both experienced and ambitious intermediate riders.
- Capacity
- 450.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Wet weight
- 113.9 kg
- Seat height
- 955 mm
- Power
- 50.0 HP (36.8 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built for closed-course cross-country and enduro-style off-road riding rather than street use or commuting.
- Built for
- A high-revving, race-derived thumper that rewards an aggressive, momentum-focused riding style with sharp handling and light overall mass.
- Not ideal for
- Not a good fit for new riders, passengers, highway commuting, or anyone wanting plush comfort and long-range touring capability.
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
- 50.0 HP (36.8 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.4390 HP/kg (wet)
- Bore x stroke
- 97.0 x 60.9 mm
- Compression
- 13.0:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- TCI
- Valves per cylinder
- 4
- Lubrication system
- Wet sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet multi-disc
Dimensions & weight
- Wheelbase
- 1471 mm
- Overall length
- 2169 mm
- Overall width
- 825 mm
- Overall height
- 1265 mm
- Seat height
- 955 mm
- Wet weight
- 113.9 kg
- Fuel capacity
- 8.00 litres
- Ground clearance
- 330 mm
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Aluminum Bilateral Beam
- Front suspension
- KYB® spring-type fork with speed sensitive damping; fully adjustable
- Rear suspension
- KYB® single shock; full adjustable
- Front wheel travel
- 300 mm
- Rear wheel travel
- 305 mm
- Rake (fork angle)
- 27.0°
- Trail
- 122 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
- 120/90-18
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 | 2016 | 2019 | 2022 | 2024 | 2026 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 450 cc | 450 cc | 450 cc | 450 cc | 450 cc | 450 cc |
| Seat height | 965 mm | 965 mm | 955 mm | 955 mm | 955 mm | 955 mm |
| Fuel capacity | 7.6 L | 8.3 L | 8.3 L | 8.3 L | 8 L | 7.9 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 YZ450FX?
The 2026 Yamaha YZ450FX has a Capacity of 450.0 ccm (27.46 cubic inches).
What engine power does the Yamaha YZ450FX have?
The 2026 Yamaha YZ450FX has a Power of 50.0 HP (36.8 kW).
How many gears does the Yamaha YZ450FX have?
The 2026 Yamaha YZ450FX has a Gearbox of 5-speed.
How much does the Yamaha YZ450FX weigh?
The 2026 Yamaha YZ450FX has a Wet weight of 113.9 kg (251.1 pounds).
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