| General |
| Year | 2008 - 09 | 2007 - 08 |
| Colours | Lime Green | - |
| Make Model | Kawasaki KLX 450R | Yamaha WR 450F |
| Dimensions |
| Ground Clearance (mm) | 320 mm | - |
| Ground Clearance (in.) | 12.6 inches | - |
| Seat Height | 940 mm / 37.0 in | 998 mm / 39.3 in |
| Wheelbase | 1480 mm / 58.3 in | 1485 mm / 58.5 in |
| Ground Clearance | 320 mm / 12.6 in | 365 mm / 14.3 in |
| Height | 1255 mm / 49.4 in | 1300 mm / 51.2 in |
| Length | 2180 mm / 85.8 in | 2175 mm / 85.6 in |
| Width | 820 mm / 32.3 in | 825 mm / 32.5 in |
| Weights & Capacities |
| Dry Weight | 115 kg / 253.5 lbs | 112.5 kg / 248 lbs |
| Fuel Capacity | 8 Litres / 2.1 US gal | 8 Liters / 2.1 US gal |
| Wet Weight | - | 122 kg / 268 lbs |
| Performance |
| Max Power | 56.4 hp / 41.5 kW @ 8500 rpm | 58 hp / 42.3 kW @ 9000 rpm |
| Max Torque | 50 Nm / 5.1 kg-m @ 7500 rpm | 49 Nm / 33.1 lb-ft @ 7000 rpm |
| Engine |
| Fuel Control | DOHC | - |
| Engine Type | Single cylinder, four-stroke | - |
| Displacement (ci) | 27.40 cubic inches | - |
| Displacement (cc) | 449.00 cc | - |
| Bore x Stroke (mm) | 96.0 x 62.1 mm | - |
| Bore x Stroke (in,) | 3.8 x 2.4 inches | - |
| Displacement | 449 cc / 27.3 cu-in | 449 cc / 27.4 in |
| Engine Detail | Four stroke, single cylinder, DOHC, 4 valves per cylinder | Four stroke, single cylinder, DOHC, 5 titanium valve per cylinder. |
| Fuel System | Carburettor. Keihin FCR40 | - |
| Bore x Stroke | 96.0 x 62.1 mm | 95 x 63.4 mm |
| Compression Ratio | 12.0:1 | 12.5:1 |
| Cooling System | Liquid cooled | Liquid cooled |
| Fuel Induction | Keihin FCR | 39mm Keihin FCR flat-slide throttle position sensor |
| Ignition | Digital AC-CDI | Digital CDI |
| Lubrication | Forced lubrication, semi and #8209;dry sump | Wet Sump |
| Starter | Electric & kick | Electric / Kick-starter |
| Valve System | 4 | - |
| Drivetrain |
| Clutch | - | Wet, multiple discs, cable operated |
| Final Drive | Chain | "O" ring Chain |
| Gearbox | 5-speed | - |
| Transmission / Drive | 5 Speed | 5 Speed |
| Chassis |
| Frame Type | Aluminum, perimeter design | Steel, Single cradle frame |
| Suspension - Front | 48mm inverted AOS-type cartridge fork with 22-way compression damping and 20-way rebound damping | 46mm Kayaba inverted telescopic fork, compression and rebound damping adjustable |
| Suspension - Rear | Uni-Trak® single shock system with 22-way low-speed, two-turn variable high-speed compression damping and 22-way rebound damping | Fully adjustable Kayaba single shock, 315mm wheel travel, separate speed compression adjustment |
| Rake | 27.1° | - |
| Trail | 122 mm / 4.6 in | - |
| Wheel Travel - Front | 285 mm / 11.2 in | 300 mm / 11.8 in |
| Wheel Travel - Rear | 278 mm / 10.9 in | 318 mm / 12.4 in |
| Wheels & Brakes |
| Brakes - Front Diameter (mm) | 250 mm | - |
| Brakes - Rear Diameter (in.) | 9.4 inches | - |
| Brakes - Rear Diameter (mm) | 240 mm | - |
| Brakes - Front Diameter (in.) | 9.8 inches | - |
| Brakes - Front | Single 250mm disc 2 piston caliper | Single 250mm disc 4 piston caliper |
| Brakes - Rear | Single 240mm disc 1 piston caliper | Single 245mm disc 2-piston caliper |
| Tyres - Front | 80/100-21 | 80/100-21 |
| Tyres - Rear | 110/100-18 | 110/100-18 |