Motocross Bikes
2017Yamaha YZ450FX
40 fields on record
The 2017 Yamaha YZ450FX is a full-featured four-stroke dirt bike designed for serious off-road enthusiasts and competition riders seeking versatility across varied terrain. Known for its potent 450cc engine paired with a lightweight chassis and fully adjustable KYB suspension, it excels in both racing and trail riding applications. The bike's tall seat height and aggressive geometry make it best suited to experienced riders prioritizing performance and control.
- Capacity
- 449.7 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Wet weight
- 118.8 kg
- Seat height
- 965 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
- 449.7 ccm
- Power
- 50.0 HP (36.8 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.4209 HP/kg (wet)
- Bore x stroke
- 97.0 x 60.8 mm
- Compression
- 12.5:1
- 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
- 118.8 kg
- Fuel capacity
- 7.60 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)
- 28.0°
- 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
- 90/90-21
- Rear tyre
- 120/90-18
Other
- Color options
- Blue/White
- Modifications compared to previous model
- Revised Suspension Systems.
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 | 2017 | 2019 | 2022 | 2024 | 2027 |
|---|---|---|---|---|---|---|
| Capacity | 450 cc | 450 cc | 450 cc | 450 cc | 450 cc | 450 cc |
| Seat height | 965 mm | 965 mm | 965 mm | 955 mm | 955 mm | 955 mm |
| Fuel capacity | 7.6 L | 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 2017 Yamaha YZ450FX has a Capacity of 449.7 ccm (27.44 cubic inches).
What engine power does the Yamaha YZ450FX have?
The 2017 Yamaha YZ450FX has a Power of 50.0 HP (36.8 kW).
How many gears does the Yamaha YZ450FX have?
The 2017 Yamaha YZ450FX has a Gearbox of 5-speed.
How much does the Yamaha YZ450FX weigh?
The 2017 Yamaha YZ450FX has a Wet weight of 118.8 kg (261.9 pounds).
Shop this bike
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The 2017 Yamaha YZ450FX is a powerful and reliable off-road motorcycle that is perfect for both casual riders and competitive racers. With its lightweight and agile design, this bike offers excellent handling and maneuverability on a variety of terrain. The 450cc engine delivers impressive power and torque, allowing riders to tackle even the most challenging trails with ease. The comfortable seating position and responsive suspension make for a smooth and enjoyable ride, while the durable construction ensures long-lasting performance. Overall, the Yamaha YZ450FX is a top choice for anyone looking for a high-performance off-road motorcycle.
If you're in the market for a versatile and capable off-road motorcycle, the 2017 Yamaha YZ450FX is a solid choice. With its powerful engine, responsive handling, and comfortable ride, this bike is well-suited for both casual riders and experienced racers alike. Whether you're hitting the trails for a weekend adventure or competing in a motocross race, the YZ450FX offers the performance and reliability you need. Plus, with Yamaha's reputation for quality and durability, you can trust that this bike will provide years of excitement and fun.
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