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MODEL SPECS |
449cc fuel-injected four-stroke
engine
49mm Showa coil-spring
front fork
Click on a technology to learn more.
| Engine Management Technology |
| Chassis Management Technology |
| Engine | 4-stroke single, DOHC, liquid-cooled |
| Displacement | 449cc |
| Bore x Stroke | 96.0 x 62.1mm |
| Compression Ratio | 12.5:1 |
| Fuel System | DFI® with 44mm Keihin throttle body |
| Ignition | Digital CDI with electric start |
| Transmission | 5-speed, return shift, with wet multi-disc manual clutch and hydraulic clutch actuation |
| Final Drive | Chain |
| Front Suspension / Wheel Travel | 49mm inverted telescopic coil-spring fork with 16-way compression damping and 16-way rebound damping/12.0 in |
| Rear Suspension / Wheel Travel | 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/12.1 in |
| Front Tire | 80/100-21 |
| Rear Tire | 120/80-19 |
| Front Brakes | Single semi-floating 270mm Braking® petal disc with dual-piston caliper |
| Rear Brakes | Single 250mm Braking® petal disc with single-piston caliper |
| Frame Type | Aluminum perimeter |
| Rake/Trail | 27.6°/4.8 in |
| Overall Length | 86.0 in |
| Overall Width | 32.7 in |
| Overall Height | 50.2 in |
| Ground Clearance | 13.4 in |
| Seat Height | 37.6 in |
| Curb Weight | 232.3 lb without fuel / 242.4 lb* |
| Fuel Capacity | 1.64 gal |
| Wheelbase | 58.5 in |
| Color Choices | Lime Green |
| Warranty | Not Available |
*Curb weight includes all necessary materials and fluids to operate correctly, full tank of fuel (more than 90 percent capacity) and tool kit (if supplied).
KAWASAKI CARES: Read Owner’s Manual and all on-product warnings. Always wear a helmet, eye protection and proper apparel. Never ride under the influence of drugs or alcohol. Adhere to the maintenance schedule in your Owner’s Manual. ©2025 Kawasaki Motors Corp., U.S.A.
Specifications subject to change.
GALLERY |
2019 KX™450: "Next Level" Ad (full)
2019 KX™450 Tech: Holeshot
2019 KX™450 Tech: Passing
2019 KX™450 Tech: Quicker Lap Times
2019 KX™450: Press Launch
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Science of Supercross Engineered by Kawasaki – Episode 65 (Helmet Technology)
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Science of Supercross Engineered by Kawasaki – Episode 62 (Engine Oil)
Science of Supercross Engineered by Kawasaki – Episode 61 (Practice)
Science of Supercross Engineered by Kawasaki - Episode 60 (Exhaust)
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