Comparison of Kawasaki KLX450R 2020 and Yamaha YZ450F 2017 [S]ave
| Attribute |  Yamaha YZ450F 2017 × |  Kawasaki KLX450R 2020 × |
|---|---|---|
| General | ||
| Production from (year) | 2017 | 2020 |
| Make | Yamaha | Kawasaki |
| Model | Yamaha YZ450F | Kawasaki KLX450R |
| Category | Cross / motocross | Enduro / offroad |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Valves per cylinder | 4 | 4 |
| Fuel system | Injection. Yamaha Fuel Injection (YFI), Keihin 44mm | Carburettor. Keihin FCR MX40 |
| Engine details | Titanium-valves | - |
| Displacement (cm³) | 449.7 | 449 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 97 | 96 |
| Stroke (mm) | 60.8 | 62.1 |
| Gearbox | 5-speed | 5-speed |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) | Double Overhead Cams/Twin Cam (DOHC) |
| Ignition | TCI: Transistor Controlled Ignition | Digital AC-CDI |
| Clutch | Wet multi-disc | Wet multi-disc, manual |
| Lubrication system | Wet sump | Forced lubrication, semi and #8209;dry sump |
| Compression | 12.5:1 | 12.0:1 |
| Chassis | ||
| Front suspension | KYB Speed-Sensitive System, inverted fork: fully adjustable | 48 mm inverted AOS type telescopic fork with 22-way compression and 18-way rebound damping |
| Rear suspension | Monoshock, adjustable preload and rebound damping | Uni-Trak with 22-way low-speed, 2 turns or more high speed compression damping, 22 way rebound damping and adjustable spring preload |
| Front brakes | Single disc. Hydraulic. | Double disc. Dual piston |
| Rear brakes | Single disc. Hydraulic. | Single disc |
| Diameter (mm) | 245 | 240 |
| Frame type | Semi double cradle | Perimeter, aluminium |
| Front tyre | 80/100-21 | 80/100-21 |
| Rear tyre | 120/80-19 | 120/90-18 |
| Seat | Long, two-tone, motocross-style seat | - |
| Front wheel travel (mm) | 310 | 305 |
| Rear wheel travel (mm) | 315 | 315 |
| Rake (fork angle) (degree) | 28 | - |
| Other | ||
| Starter | Electric | Electric & kick |
| Color options |
|
|
| Dimensions | ||
| Wheelbase (mm) | 1,481 | 1,480 |
| Kerb weight (kg) | 111.1 | 126 |
| Overall height (mm) | 1,290 | 1,250 |
| Overall length (mm) | 2,174 | 2,175 |
| Overall width (mm) | 826 | 820 |
| Seat height (mm) | 975 | 935 |
| Ground clearance (mm) | 335 | 315 |
| Performance | ||
| Fuel capacity (l) | 7.57 | 8 |
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