2025 Kawasaki KX 450X Specifications
| Manufacturer | Kawasaki |
| Model Year | 2025 |
| Model | KX 450X |
| Model Code | KX450NSFNN |
| Stock Number | 2025084 |
| Color | Lime Green |
| Brakes | Front: Semi-floating 270 mm Braking / Sunstar petal disc, Brembo master cylinder, dual-piston caliper Rear: 240 mm Braking / Sunstar petal disc, single-piston caliper |
| Tires | Front: 80 / 100-21 Rear: 120 / 80-18 |
| Length | 85.6 in. |
| Height | 49.6 in. |
| Width | 32.1 in. |
| Weight | Curb (without fuel): 239.8 lb. Curb (with fuel): 249.9 lb. *Curb weight includes fluids, full fuel tank (90%+), and supplied tool kit. |
| Ground Clearance | 13.2 in. |
| Wheelbase | 58.3 in. |
| Seat Height | 37.4 in. |
| Transmission | 5-speed, return shift |
| Final Drive | Chain |
| Instrumentation | Smartphone Connectivity via RIDEOLOGY THE APP KX |
| Electronics | Kawasaki TRaction Control (KTRC) Power Modes Launch Control Mode |
| Engine | 4-stroke, DOHC, single cylinder |
| Cooling | Liquid |
| Displacement | 449 cc |
| Bore x Stroke | 3.7 x 2.4 in. (96 x 62.1 mm) |
| Compression Ratio | 12.5:1 |
| Clutch | Wet multi-disc manual with hydraulic actuation |
| Fuel System | DFI with 44 mm Keihin throttle body |
| Ignition | Digital CDI with handlebar-controlled Power Modes |
| Fuel Capacity | 1.64 gal. |
| Frame | Aluminum perimeter |
| Chassis Management | ERGO-FIT System |
| Front Suspension | 49 mm Showa inverted telescopic coil-spring fork 21-way adjustable compression, 22-way adjustable rebound Wheel Travel: 12.0 in. |
| Rear Suspension | Uni-Trak gas-charged shock with piggyback reservoir 19-way low-speed and stepless high-speed compression damping 23-way rebound damping, stepless adjustable preload Wheel Travel: 12.1 in. |
| Rake | 27° |
| Trail | 4.6 in. |
| Grips | ODI lock-on |
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