Motocross Bikes
2018Kawasaki KX450F
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The 2018 Kawasaki KX450F is a high-performance four-stroke motocross bike designed for intermediate to advanced riders seeking competitive racing capability. Known for its potent engine delivery and aggressive handling characteristics, it excels in both sand and hard-packed terrain. The lightweight frame and responsive suspension setup make it ideal for riders prioritizing speed and precision control.
- Capacity
- 449.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 99.8 kg
- Seat height
- 950 mm
- Power
- 44.9 HP (33.0 kW)
What’s new for the 2018 Kawasaki KX450F
vs the 2017| Spec | 2017 | 2018 |
|---|---|---|
| Front suspension | 49 mm inverted Separate Function front Fork Air - Triple Air Chamber (SFF-Air TAC). Compression damping: 22-way. Rebound damping: 20-way | Inverted Showa SFF-Air TAC fork with Triple Air Chamber, DLC coated sliders, 22-position compression and 20-position rebound damping adjustment |
| Rear suspension | Uni-Trak. Compression damping: 19-way (low-speed), 4-turns or more (high-speed). Rebound damping: 22-way. Spring preload: Fully adjustable | Uni-Trak® linkage system and Showa shock, 19-position low-speed and 4-turns high-speed compression damping, 22-position rebound damping and fully adjustable spring preload |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for closed-course motocross racing and aggressive off-road riding, not general transportation.
- Built for
- A raw, high-strung, race-bred single-cylinder machine that rewards aggressive, committed riding with explosive acceleration and razor-sharp handling.
- Not ideal for
- Not suitable for commuting, touring, passengers, or riders seeking comfort and low-maintenance road use.
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
- 449.0 ccm
- Power
- 44.9 HP (33.0 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.4499 HP/kg (dry)
- Bore x stroke
- 96.0 x 62.1 mm
- Compression
- 12.8:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Kick
- Ignition
- Digital DC-CDI
- Valves per cylinder
- 4
- Lubrication system
- Forced lubrication, semi and #8209;dry sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet multi-disc
Dimensions & weight
- Wheelbase
- 1495 mm
- Overall length
- 2195 mm
- Overall width
- 820 mm
- Overall height
- 1280 mm
- Seat height
- 950 mm
- Dry weight
- 99.8 kg
- Wet weight
- 108.8 kg
- Fuel capacity
- 6.20 litres
- Ground clearance
- 335 mm
Chassis & suspension
- Frame
- Perimeter, aluminium
- Front suspension
- Inverted Showa SFF-Air TAC fork with Triple Air Chamber, DLC coated sliders, 22-position compression and 20-position rebound damping adjustment
- Rear suspension
- Uni-Trak® linkage system and Showa shock, 19-position low-speed and 4-turns high-speed compression damping, 22-position rebound damping and fully adjustable spring preload
- Front wheel travel
- 305 mm
- Rear wheel travel
- 305 mm
- Rake (fork angle)
- 28.2°
- Trail
- 127 mm
Brakes & wheels
- Front brakes
- Single disc. Petal disc with 2-piston caliper
- Front brakes diameter
- 270 mm
- Rear brakes
- Single disc. Petal disc with single-piston caliper
- Rear brakes diameter
- 240 mm
- Front tyre
- 80/100-21
- Rear tyre
- 120/80-19
Other
- Color options
- Lime Green
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 | 2006 | 2009 | 2012 | 2015 | 2018 |
|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 449 cc | 449 cc |
| Dry weight | 100 kg | 100 kg | 100 kg | 100 kg | 100 kg |
| Seat height | 965 mm | 965 mm | 955 mm | 955 mm | 950 mm |
| Fuel capacity | 7.2 L | 7 L | 6.2 L | 6.2 L | 6.2 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 Kawasaki KX450F?
The 2018 Kawasaki KX450F has a Capacity of 449.0 ccm (27.40 cubic inches).
What engine power does the Kawasaki KX450F have?
The 2018 Kawasaki KX450F has a Power of 44.9 HP (33.0 kW).
How many gears does the Kawasaki KX450F have?
The 2018 Kawasaki KX450F has a Gearbox of 5-speed.
How much does the Kawasaki KX450F weigh?
The 2018 Kawasaki KX450F has a Dry weight of 99.8 kg (220.0 pounds).
Shop this bike
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The 2018 Kawasaki KX 450F is a top-of-the-line motocross bike that offers impressive power and handling. With a 449cc engine and lightweight aluminum frame, this motorcycle is designed for high performance on the track. The advanced suspension system and responsive brakes provide excellent control, making it an ideal choice for experienced riders. The sleek design and quality construction of the KX 450F make it a standout in the competitive motocross market.
Overall, the 2018 Kawasaki KX 450F is a remarkable motocross bike that delivers on performance and style. Its powerful engine, advanced suspension, and precision handling make it a top choice for serious riders. Whether you're hitting the track or tackling challenging terrain, the KX 450F is a reliable and powerful companion for any motocross enthusiast. Experience the thrill of the 2018 Kawasaki KX 450F and take your riding to the next level.
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