Motocross Bikes
2027Kawasaki KX450X
34 fields on record
The 2027 Kawasaki KX450X, renamed from KX450X, is Kawasaki's cross-country racer for intermediate to expert off-road riders. The new generation brings a revised 449cc single, a new aluminium frame, new suspension and Brembo brakes, with a 5-speed gearbox and a 6.2-litre tank. It suits GNCC-style racing more than the motocross track.
- Capacity
- 449.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- Not on record
Know it? Add it → - Seat height
- 955 mm
- Power
- 56.0 HP (41.2 kW)
What’s new for the 2027 Kawasaki KX450X
vs the 2026| Spec | 2026 | 2027 |
|---|---|---|
| Dry weight | 107.0 kg (235.9 pounds) | not listed |
| Wet weight | 113.4 kg (250.0 pounds) | not listed |
| Front suspension | 49mm inverted telescopic coil-spring fork with 16-way compression damping and 16-way rebound damping | Showa 49 mm coil-spring inverted fork |
| Rear suspension | Uni-Trak® gas charged shock with piggyback reservoir with dual-range (4 turns stepless high speed/19-way low-speed) compression damping, 38-way rebound damping and adjustable preload | New Uni-Trak, dual-range compression |
| Front brakes | Single disc. Semi-floating petal discs | Brembo dual-piston caliper, petal disc |
| Rear brakes | Single disc. Single-piston caliper. | Brembo single-piston caliper, petal disc |
| Wheelbase | 1481 mm (58.3 inches) | not listed |
| Compression | 12.5:1 | 12.7:1 |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built specifically for cross-country and off-road racing, with a wide-ratio gearbox, larger fuel capacity, and chassis geometry tuned for extended off-road stability rather than motocross jumps or street use.
- Built for
- It has the raw, high-strung, minimalist character of a purpose-built race bike: light, responsive, and demanding rather than forgiving.
- Not ideal for
- This is not a suitable choice for commuting, highway touring, carrying a passenger, or riders seeking plush comfort and low-maintenance road-going practicality.
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
- 56.0 HP (41.2 kW)
- Engine type
- Single, four-stroke
- Bore x stroke
- 96.0 x 62.1 mm
- Compression
- 12.7:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- Digital DC-CDI
- Lubrication system
- Forced lubrication, semi-dry sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Clutch
- Wet multi-disc, manual
Dimensions & weight
- Overall length
- 2174 mm
- Overall width
- 815 mm
- Overall height
- 1260 mm
- Seat height
- 955 mm
- Fuel capacity
- 6.20 litres
- Ground clearance
- 335 mm
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Perimeter, aluminum
- Front suspension
- Showa 49 mm coil-spring inverted fork
- Rear suspension
- New Uni-Trak, dual-range compression
- Front wheel travel
- 305 mm
- Rear wheel travel
- 307 mm
- Rake (fork angle)
- 27.0°
- Trail
- 117 mm
Brakes & wheels
- Front brakes
- Brembo dual-piston caliper, petal disc
- Front brakes diameter
- 270 mm
- Rear brakes
- Brembo single-piston caliper, petal disc
- Rear brakes diameter
- 240 mm
- Front tyre
- 80/100-21
- Rear tyre
- 120/80-18
Other
- Comments
- Kawasaki sells the 2027 model as the KX450FX.
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 | 2021 | 2023 | 2024 | 2026 | 2027 |
|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 449 cc | 449 cc |
| Dry weight | 107 kg | 107 kg | 107 kg | 107 kg | — |
| Seat height | 950 mm | 950 mm | 950 mm | 950 mm | 955 mm |
| Fuel capacity | 6.2 L | 6.2 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 KX450X?
The 2027 Kawasaki KX450X has a Capacity of 449.0 ccm (27.40 cubic inches).
What engine power does the Kawasaki KX450X have?
The 2027 Kawasaki KX450X has a Power of 56.0 HP (41.2 kW).
How many gears does the Kawasaki KX450X have?
The 2027 Kawasaki KX450X has a Gearbox of 5-speed.
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