Kawasaki KX 450F - 2011 Specifications and Reviews
The 2011 Kawasaki KX450F is a high-performance motocross bike designed for intermediate to advanced riders competing at the national level. Powered by a 449cc liquid-cooled four-stroke engine, it delivers aggressive power delivery and precise handling through its steel backbone frame. Known for its competitive edge in MX racing, the KX450F combines reliability with race-winning performance.
General information | |
| Category | Cross / motocross |
| Year | 2011 |
| Model | Kawasaki KX 450F |
Engine and Transmission Specifications | |
| Transmission type,final drive | Chain |
| Gearbox | 5-speed |
| Cooling system | Liquid |
| Ignition | Digital DC-CDI |
| Fuel control | DOHC |
| Fuel system | Carburettor. 43mm Keihin throttle body |
| Valves per cylinder | 4 |
| Bore x stroke | 96.0 x 62.1 mm (3.8 x 2.4 inches) |
| Compression | 12.5:1 |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 449.00 ccm (27.40 cubic inches) |
| | |
Brakes, suspension, Frame and wheels | |
| Rear brakes diameter | 240 mm (9.4 inches) |
| Rear brakes | Single disc |
| Front brakes diameter | 250 mm (9.8 inches) |
| Front brakes | Single disc |
| Rear tyre dimensions | 120/80-19 |
| Front tyre dimensions | 90/100-21 |
| Rear suspension | Uni-Trak linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression dampening, 33-position rebound dampening and fully adjustable spring preload / 12.4 in. |
| Front suspension | Uni-Trak linkage system and Kayaba shock with 50mm piston, 22-position low-speed and stepless high-speed compression damping, 33-position rebound dampening and fully adjustable spring preload / 12.4 in. |
| Rake (fork angle) | 26.7° |
| Frame type | Backbone frame, high-tensile steel |
| | |
Physical measures and capacities | |
| Fuel capacity | 7.19 litres (1.90 gallons) |
| Wheelbase | 1,481 mm (58.3 inches) |
| Ground clearance | 335 mm (13.2 inches) |
| Overall width | 820 mm (32.3 inches) |
| Overall length | 2,184 mm (86.0 inches) |
| Overall height | 1,280 mm (50.4 inches) |
| Seat height | 960 mm (37.8 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 113.4 kg (249.9 pounds) |
Other specs | |
| Factory warranty | 12 Months |
| Starter | Electric |
| Wheelbase | 965 mm (38.0 inches) |
| Rear tyre | 18/9-8 |
| Front tyre | 18/7-8 |
| Rear Suspension | Swingarm with single shock absorber / 2.9 in. |
| Front Suspension | Single A-arm with twin shock absorbers / 2.8 in. |
| Bore x Stroke | 47.0 x 51.8 mm (1.9 x 2.0 inches) |
| Compression | 10.0:1 |
| Model | Kawasaki KFX 90 |
| Color options | Lime Green |






































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