Comparison of Kawasaki KX450 2019 and Suzuki RM-Z450 2021 [S]ave
| Attribute |  Suzuki RM-Z450 2021 × |  Kawasaki KX450 2019 × |
|---|---|---|
| General | ||
| Production from (year) | 2021 | 2019 |
| Make | Suzuki | Kawasaki |
| Model | Suzuki RM-Z450 | Kawasaki KX450 |
| Category | Cross / motocross | Cross / motocross |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Valves per cylinder | 4 | - |
| Fuel system | Injection. 44mm throttle body | Injection |
| Engine details | Aluminum cylinder with Suzuki Composite Electrochemical Material (SCEM) coating | - |
| Displacement (cm³) | 449 | 449 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 96 | 96 |
| Stroke (mm) | 62.1 | 62 |
| Gearbox | 5-speed | 5-speed |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) | Double Overhead Cams/Twin Cam (DOHC) |
| Driveline | Chain, DID520MXV4, 114 links | - |
| Ignition | CDI | Digital |
| Clutch | Wet, multi-plate rack-and-pinion clutch | Wet multi-disc, manual |
| Lubrication system | Semi-dry sump | - |
| Compression | 12.5:1 | 12.5:1 |
| Chassis | ||
| Front suspension | Inverted telescopic, coil spring, oil damped, adjustable damping force | - |
| Rear suspension | BFRC-link type, coil spring, oil damped, adjustable spring preload and damping force | - |
| Front brakes | Single disc | Single disc. Semi-floating petal discs |
| Rear brakes | Single disc | Single disc. Single-piston caliper. |
| Diameter (mm) | 270 | 250 |
| Frame type | Aluminum alloy, twin-spar | Perimeter, aluminium |
| Front tyre | 80/100-21 | 80/100-21 |
| Rear tyre | 110/90-19 | 120/80-19 |
| Wheels | Black anodized rims with a cross-section. Bridgestone X30 tires. | - |
| Other | ||
| Starter | Kick | Electric |
| Color options |
|
|
| Dimensions | ||
| Wheelbase (mm) | 1,480 | 1,485 |
| Kerb weight (kg) | 112 | 110 |
| Overall height (mm) | 1,260 | 1,275 |
| Overall length (mm) | 2,175 | 2,185 |
| Overall width (mm) | 835 | 830 |
| Seat height (mm) | 960 | 955 |
| Ground clearance (mm) | 330 | 340 |
| Performance | ||
| Fuel capacity (l) | 6.3 | 6.2 |
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