Motocross Bikes
2019Yamaha YZ450FX
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The 2019 Yamaha YZ450FX is a four-stroke off-road motorcycle designed for trail riders and recreational users seeking reliable performance. Known for its electric starter convenience and manageable 116 kg weight, it excels in mixed terrain riding. The bike combines practical features like an 8.33-liter fuel capacity with responsive handling for both experienced and intermediate off-road enthusiasts.
- Capacity
- 449.7 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Wet weight
- 116.1 kg
- Seat height
- 965 mm
- Power
- 50.0 HP (36.8 kW)
What’s new for the 2019 Yamaha YZ450FX
vs the 2018| Spec | 2018 | 2019 |
|---|---|---|
| Torque | — | 44.2 Nm (4.5 kgf-m or 32.6 ft.lbs) @ 7330 RPM |
| Wet weight | 118.8 kg (261.9 pounds) | 116.1 kg (256.0 pounds) |
| Fuel capacity | 7.60 litres (2.01 US gallons) | 8.30 litres (2.19 US gallons) |
| Compression | 12.5:1 | 12.8:1 |
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
- 449.7 ccm
- Power
- 50.0 HP (36.8 kW)
- Torque
- 44.2 Nm (4.5 kgf-m) @ 7330 RPM
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.4307 HP/kg (wet)
- Bore x stroke
- 97.0 x 60.9 mm
- Compression
- 12.8:1
- 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
- 1481 mm
- Overall length
- 2174 mm
- Overall width
- 826 mm
- Overall height
- 1290 mm
- Seat height
- 965 mm
- Wet weight
- 116.1 kg
- Fuel capacity
- 8.30 litres
- Ground clearance
- 335 mm
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Aluminum Bilateral Beam frame
- Front suspension
- KYB® spring-type fork with speed sensitive damping; fully adjustable
- Rear suspension
- KYB® single shock; full adjustable
- Front wheel travel
- 310 mm
- Rear wheel travel
- 318 mm
- Rake (fork angle)
- 27.2°
- Trail
- 117 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
- 120/80-18
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 | 2016 | 2019 | 2022 | 2024 | 2027 |
|---|---|---|---|---|---|
| Capacity | 450 cc | 450 cc | 450 cc | 450 cc | 450 cc |
| Seat height | 965 mm | 965 mm | 955 mm | 955 mm | 955 mm |
| Fuel capacity | 7.6 L | 8.3 L | 8.3 L | 8.3 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 2019 Yamaha YZ450FX has a Capacity of 449.7 ccm (27.44 cubic inches).
What engine power does the Yamaha YZ450FX have?
The 2019 Yamaha YZ450FX has a Power of 50.0 HP (36.8 kW).
How many gears does the Yamaha YZ450FX have?
The 2019 Yamaha YZ450FX has a Gearbox of 5-speed.
What is the torque of the Yamaha YZ450FX?
The 2019 Yamaha YZ450FX has a Torque of 44.2 Nm (4.5 kgf-m or 32.6 ft.lbs) @ 7330 RPM.
How much does the Yamaha YZ450FX weigh?
The 2019 Yamaha YZ450FX has a Wet weight of 116.1 kg (256.0 pounds).
Shop this bike
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The 2019 Yamaha YZ450FX is a powerful and versatile off-road motorcycle that is perfect for riders who want to take on a variety of terrains. With its lightweight aluminum frame and powerful 450cc engine, this bike delivers excellent performance and handling on trails and tracks alike. The YZ450FX also features advanced suspension and adjustable ergonomics, allowing riders to fine-tune their setup for optimal comfort and control.
Yamaha has also equipped the 2019 YZ450FX with advanced technology, including electric start, a multi-function LCD display, and a wireless smartphone tuning app. These features make the bike easy to use and customize, giving riders the ability to tailor their experience to their preferences. Overall, the 2019 Yamaha YZ450FX is a top-notch off-road motorcycle that offers exceptional performance and versatility for riders of all skill levels.
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