| Attribute | Kawasaki KMX 125 1999 × | Aprilia RX 125 2019 × |
|---|---|---|
| General | ||
| Production from (year) | 1999 | 2019 |
| Make | Kawasaki | Aprilia |
| Model | Kawasaki KMX 125 | Aprilia RX 125 |
| Category | Enduro / offroad | Enduro / offroad |
| Engine and transmission | ||
| Engine type | Single cylinder, two-stroke | Single cylinder, four-stroke |
| Valves per cylinder | - | 4 |
| Fuel system | - | Injection. Magneti Marelli M3G ø 32mm ECU |
| Displacement (cm³) | 125 | 124.2 |
| Power (kw) | 10.9 | 10.9 |
| Fuel consumption (l/100km) | 0.54 | - |
| Cooling system | Air | Liquid |
| Transmission type,final drive | Chain | Chain |
| Torque (Nm) | 13 | 10.9 |
| Bore (mm) | 54 | 58 |
| Stroke (mm) | 54.4 | 47 |
| Gearbox | 6-speed | 6-speed |
| Greenhouse gases | 12.5 CO2 g/km. (CO2 - Carbon dioxide emission) | - |
| Fuel control | - | Double Overhead Cams/Twin Cam (DOHC) |
| Emission details | - | Euro 4 |
| Driveline | - | Primary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35). |
| Ignition | - | Electronic with CDI capacity discharge |
| Clutch | - | Multi-plate in oil bath. |
| Lubrication system | - | Wet sump |
| Compression | 7.8:1 | 12.5:1 |
| Chassis | ||
| Front suspension | - | Ø 41 mm telescopic upside down fork |
| Rear suspension | - | Hydraulic monoshock absorber with progressive link system. |
| Front brakes | Single disc | Single disc. Floating calliper |
| Rear brakes | Single disc | Single disc. Floating calliper |
| Diameter (mm) | 210 | 220 |
| Frame type | - | Steel perimeter |
| Front tyre | - | 90/90-21 |
| Rear tyre | - | 120/80-18 |
| Wheels | - | Aluminium spoked wheel. |
| Front wheel travel (mm) | 230 | 240 |
| Rear wheel travel (mm) | 230 | 220 |
| Other | ||
| Starter | Kick | Electric |
| Color options | - |
|
| Dimensions | ||
| Wheelbase (mm) | 1,375 | 1,350 |
| Kerb weight (kg) | 115 | 120 |
| Seat height (mm) | 860 | 905 |
| Front percentage of weight | 47 | - |
| Performance | ||
| Top speed (km/h) | 106 | - |
| Fuel capacity (l) | 9.3 | 7.5 |