2026Kawasaki KX450

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The 2026 Kawasaki KX450 is a high-performance 450cc four-stroke motocross bike engineered for competitive and serious amateur riders. It delivers aggressive power through its 12.5:1 compression ratio engine and lightweight aluminum perimeter frame, excelling in aggressive terrain and racing applications. Known for its potent acceleration and responsive handling, it's the weapon of choice for riders demanding top-tier performance.

Capacity: 449.0 ccm
Engine: Single, four-stroke
Gearbox: 5-speed
Dry weight: 107.0 kg
Seat height: 960 mm
Power: 56.0 HP (41.2 kW)

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Other years 2019 2020 2021 2022 2023 2024 2025 2026 2027

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail98%

Cornering85%

City riding10%

Daily riding8%

Touring5%

Two-up0%

Track90%

Best for: Built purely for motocross racing on closed circuits, jumps, and rough terrain rather than any form of street use.
Built for: A razor-sharp, lightweight, high-revving dirt weapon that rewards aggressive, athletic riding with explosive agility over jumps and rough tracks.
Not ideal for: It is not suitable for commuting, touring, passengers, or anyone seeking comfort, storage, or street-legal 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?

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Your height

Inseam (optional)

Units

At 960mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2026 Kawasaki KX450, with a cramped knee angle of around 85 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at over 900 mm — Sky High →

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Full specifications

Engine

Capacity: 449.0 ccm
Power: 56.0 HP (41.2 kW)
Engine type: Single, four-stroke
Power/weight ratio: 0.5234 HP/kg (dry)
Bore x stroke: 96.0 x 62.1 mm
Compression: 12.5:1
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
Final drive: Chain
Clutch: Wet multi-disc, manual

Dimensions & weight

Wheelbase: 1481 mm
Overall length: 2179 mm
Overall width: 820 mm
Overall height: 1270 mm
Seat height: 960 mm
Dry weight: 107.0 kg
Wet weight: 112.6 kg
Fuel capacity: 6.20 litres
Ground clearance: 345 mm

Chassis & suspension

Frame: Perimeter, aluminum
Front suspension: 49mm inverted telescopic coil-spring fork with 16-way compression damping and 16-way rebound damping
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
Front wheel travel: 305 mm
Rear wheel travel: 307 mm
Rake (fork angle): 26.6°
Trail: 114 mm

Brakes & wheels

Front brakes: Single disc. Semi-floating petal discs
Front brakes diameter: 270 mm
Rear brakes: Single disc. Single-piston caliper.
Rear brakes diameter: 240 mm
Front tyre: 80/100-21
Rear tyre: 120/80-19

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	2019	2021	2023	2025	2026	2027
Capacity	449 cc	449 cc	449 cc	449 cc	449 cc	449 cc
Dry weight	105 kg	106 kg	106 kg	107 kg	107 kg	—
Seat height	955 mm	955 mm	955 mm	960 mm	960 mm	960 mm
Fuel capacity	6.2 L	6.2 L	6.2 L	6.2 L	6.2 L	6.2 L