The Kawasaki KX450F motorcycle specifications include a 449 cc (27.40 cu in) engine, a 5-speed gearbox, and a listed weight of 99.8 kg (220 lb).
Key specifications
The 2008 model is treated as the standard specification. Only later model years with a different supplied value are shown below.
How the Kawasaki KX450F 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 21% taller than the Kawasaki database average. Around the 99th percentile across Kawasaki models.
About 53% smaller than the Kawasaki database average. Around the 13th 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.
965 mm — taller than about 99% of Kawasaki models.
7.2 L — larger than about 13% 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.
2,184
2,122
Close to average.
820
833
Close to average.
1,280
1,175
9% above average.
1,486
1,441
3% above average.
965
801
21% above average.
345
187
85% above average.
Mechanical overview
Additional useful specifications
| Front tire size | 90/70-21 |
|---|---|
| Rear tire size | 120/80-19 |
| Front tire width | 90 mm |
| Front tire aspect ratio | 70% |
| Front rim diameter | 21 in |
| Rear tire width | 120 mm |
| Rear tire aspect ratio | 80% |
| Rear rim diameter | 19 in |
| Bore/stroke ratio | 1.55:1 (Oversquare) |
Engine specifications
| Engine type | Single cylinder, four-stroke |
|---|---|
| Displacement | 449 cc (27.40 cu in) |
| Torque | 40.0 Nm (4.1 kgf-m or 29.5 ft.lbs) @ 11,500 rpm |
| Bore × stroke | 96.0 x 62.1 mm (3.8 x 2.4 inches) |
| Compression ratio | 12.0:1 |
| Valves per cylinder | 4 |
| Cooling system | Air |
| Fuel system | Carburettor. Keihin FCR40 |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Ignition | Multi-map digital CDI with throttle position sensor (K-TRIC) |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Chain (final drive) |
Chassis and suspension
| Frame | Aluminum perimeter |
|---|---|
| Front suspension | 48mm inverted, Kayaba AOS with DLC coated sliders, 22-position compression and 20-position rebound dampening adjustment / 12.4 in. |
| Rear suspension | UNI-TRAK® linkage system with 22-position low-speed and variable high-speed compression dampening, 22-position rebound dampening and fully adjustable spring preload / 12.4 in. |
| Rake | 27.1° |
Brakes, wheels and tires
| Front brakes | Single disc |
|---|---|
| Rear brakes | Single disc |
| Front tire | 90/70-21 |
| Rear tire | 120/80-19 |
Dimensions and weight
| Dry weight | 99.8 kg (220 lb) |
|---|---|
| Seat height | 965 mm (38.0 inches) |
| Overall length | 2,184 mm (86.0 inches) |
| Overall width | 820 mm (32.3 inches) |
| Overall height | 1,280 mm (50.4 inches) |
| Wheelbase | 1,486 mm (58.5 inches) |
| Ground clearance | 345 mm (13.6 inches) |
Fuel and emissions
| Fuel capacity | 7.19 L (1.90 US gal) |
|---|
Other specifications
| Color options | Lime Green |
|---|---|
| Price as new | US$ 6999. 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.