The Kawasaki KX450X motorcycle specifications include a 449 cc (27.40 cu in) engine, a 5-speed gearbox, and a listed weight of 107 kg (235.8 lb).
Key specifications
The 2021 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Kawasaki KX450X compares
This compares the motorcycle with all Kawasaki models in this specifications database. The blue marker is this model and the grey line is the Kawasaki database average.
About 35% lower than the Kawasaki database average. Around the 34th percentile across Kawasaki models.
About 19% taller than the Kawasaki database average. Around the 98th percentile across Kawasaki models.
About 59% smaller than the Kawasaki database average. Around the 9th percentile across Kawasaki models.
Kawasaki database percentile rankings
Percentiles show where this motorcycle sits across the Kawasaki specifications database. They are descriptive database rankings, not performance ratings.
449 cc — larger displacement than about 34% of Kawasaki models.
950 mm — taller than about 98% of Kawasaki models.
6.2 L — larger than about 9% of Kawasaki fuel tanks in this database.
Dimensions compared with Kawasaki average
Each measurement is compared with the average value across Kawasaki models where that dimension is available.
2,185
2,122
Close to average.
820
833
Close to average.
1,265
1,175
8% above average.
1,485
1,441
3% above average.
950
801
19% above average.
335
187
79% above average.
Mechanical overview
Additional useful specifications
| Front tire size | 80/100-21 |
|---|---|
| Rear tire size | 120/80-18 |
| Front tire width | 80 mm |
| Front tire aspect ratio | 100% |
| Front rim diameter | 21 in |
| Rear tire width | 120 mm |
| Rear tire aspect ratio | 80% |
| Rear rim diameter | 18 in |
| Bore/stroke ratio | 1.55:1 (Oversquare) |
Engine specifications
| Engine type | Single cylinder, four-stroke |
|---|---|
| Displacement | 449 cc (27.40 cu in) |
| Bore × stroke | 96.0 x 62 mm (3.8 x 2.4 inches) |
| Compression ratio | 12.5:1 |
| Cooling system | Liquid |
| Fuel system | Injection. DFI® with 44mm Keihin throttle body |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Ignition | Digital CDI with 3 Coupler Options |
| Starter | Electric |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Chain (final drive) |
| Clutch | Wet multi-disc, manual |
Chassis and suspension
| Frame | Aluminum perimeter |
|---|---|
| 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 (12.0 inches) |
| Rear wheel travel | 307 mm (12.1 inches) |
| Rake | 27.6° |
| Trail | 119 mm (4.7 inches) |
Brakes, wheels and tires
| Front brakes | Single disc. Semi-floating petal discs |
|---|---|
| Rear brakes | Single disc. Single-piston caliper. |
| Front tire | 80/100-21 |
| Rear tire | 120/80-18 |
Dimensions and weight
| Dry weight | 107 kg (235.8 lb) |
|---|---|
| Seat height | 950 mm (37.4 inches) |
| Overall length | 2,185 mm (86.0 inches) |
| Overall width | 820 mm (32.3 inches) |
| Overall height | 1,265 mm (49.8 inches) |
| Wheelbase | 1,485 mm (58.5 inches) |
| Ground clearance | 335 mm (13.2 inches) |
Fuel and emissions
| Fuel capacity | 6.20 L (1.64 US gal) |
|---|
Other specifications
| Color options | Lime Green |
|---|---|
| Price as new | US$ 9599. MSRP depends on country, taxes, accessories, etc. |
Disclaimer: Specifications may vary by market, trim, production date and optional equipment, and scraped or historical data can contain errors. Comparison and percentile values are calculated from Kawasaki models in this specifications database. Always double-check important specifications against the motorcycle owner’s/service manual and official Kawasaki information before relying on them. Visit the official Kawasaki website.