The Kawasaki KLX 450R motorcycle specifications include a 449 cc (27.40 cu in) engine and a 5-speed gearbox.
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 KLX 450R 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 48% smaller than the Kawasaki database average. Around the 17th 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.
7.9 L — larger than about 17% of Kawasaki fuel tanks in this database.
Mechanical overview
Additional useful specifications
| Front tire size | 80/90-21 |
|---|---|
| Rear tire size | 100/90-18 |
| Front tire width | 80 mm |
| Front tire aspect ratio | 90% |
| Front rim diameter | 21 in |
| Rear tire width | 100 mm |
| Rear tire aspect ratio | 90% |
| Rear rim diameter | 18 in |
| Bore/stroke ratio | 1.55:1 (Oversquare) |
Model information
| Category | Enduro / offroad |
|---|
Engine specifications
| Engine type | Single cylinder, four-stroke |
|---|---|
| Displacement | 449 cc (27.40 cu in) |
| Bore × stroke | 96.0 x 62.1 mm (3.8 x 2.4 inches) |
| Compression ratio | 12.0:1 |
| Cooling system | Liquid |
| Fuel system | Carburettor. Keihin FCE |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Ignition | Digital AC-CDI |
| Starter | Electric & kick |
Transmission and drivetrain
| Gearbox | 5-speed |
|---|---|
| Final drive | Chain (final drive) |
Chassis and suspension
| Frame | Aluminum, perimeter design |
|---|---|
| Front suspension | 48mm inverted AOS-type cartridge fork with 22-way compression damping and 20-way rebound damping / 11.2 in. |
| Rear suspension | UNI-TRAK® single shock system with 22-way low-speed, two-turn variable high-speed compression damping and 22-way rebound damping / 11.0 in. |
| Rake | 27.1° |
Brakes, wheels and tires
| Front brakes | Double disc |
|---|---|
| Rear brakes | Single disc |
| Front tire | 80/90-21 |
| Rear tire | 100/90-18 |
Fuel and emissions
| Fuel capacity | 7.94 L (2.10 US gal) |
|---|
Other specifications
| Color options | Lime Green |
|---|---|
| Comments | This 2008 model is available from early 2007. |
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.