We invite you to discover the exceptional 2021 KTM 125 SX – a motorcycle that combines power, agility, and unmatched performance. With a heart beating in the form of a 124.8 cm³ engine generating 15 HP, this machine is the perfect choice for young motocross enthusiasts and riders looking for an excellent racing machine. The KTM 125 SX offers not only outstanding performance but also a lightweight design that allows for precise maneuvering and incredible riding pleasure. Thanks to advanced technology and modern solutions, every moment spent on its handlebars will provide you with unforgettable thrills. Invest in your passion and see why the KTM 125 SX is so highly regarded among motorcyclists worldwide!
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| Engine Capacity (cm³) | 124.8 |
|---|---|
| Type | Single-cylinder, two-stroke |
| Details | - |
| Bore × Stroke (mm) | 54.0 x 54.5 |
| Compression | - |
| Valves/Cylinder | - |
| Max RPM | - |
| Power (HP) | 15.0 |
|---|---|
| Power (kW) | 15.0 HP (10.9 kW)) |
| Torque (Nm) | - |
| Peak Torque (RPM) | - |
| 0-100 km/h (s) | - |
| 1/4 Mile (s) | - |
| Top Speed (km/h) | - |
| Gearbox | 6-speed |
|---|---|
| Final Drive | Chain (final drive) |
| Clutch | Multi-plate clutch, Brembo hydraulics |
| Driveline | 5/8  x  1/4 (520) O Ring. Primary drive: 22:72. |
| Fuel System | Injection |
|---|---|
| Fuel Control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel Consumption (l/100 km) | - |
| Fuel Capacity (l) | 7,5 |
| Reserve Fuel (l) | - |
| Oil Capacity (l) | - |
| CO₂ Emissions (g/km) | - |
| Emission Details | - |
| Exhaust System | - |
| Frame Type | Central double-cradle-type 25CrMo4 steel |
|---|---|
| Rake Angle (°) | 26.1° |
| Trail (mm) | - |
| Front Suspension | WP XACT-USD, Ø 48 mm |
| Front Wheel Travel (mm) | 310 mm (12.2 inches) |
| Rear Suspension | WP XACT Monoshock with linkage |
| Rear Wheel Travel (mm) | 300 mm (11.8 inches) |
| Dry Weight (kg) | 87,5 |
|---|---|
| Total Weight (kg) | - |
| Power-to-Weight Ratio | 0,1714 |
| Seat Height (mm) | 850 |
| Overall Height (mm) | - |
| Overall Length (mm) | - |
| Overall Width (mm) | - |
| Wheelbase (mm) | - |
| Ground Clearance (mm) | 375 |
| Front Tyre | 110-17 |
|---|---|
| Rear Tyre | 150-17 |
| Front Brakes | Single disc |
| Front Brake Diameter (mm) | 260 |
| Rear Brakes | Single disc |
| Rear Brake Diameter (mm) | 220 |
| Wheels | - |
| Starter | Kick |
|---|---|
| Instruments | - |
| Electrical | - |
| Light | - |
| Battery | - |
| Ignition | Kokusan EMS |
| Lubrication System | Wet sump |
|---|---|
| Cooling System | Liquid |
| Engine Oil | - |
| Oil Filter | - |
| Brake Fluid | - |
| Coolant | - |
| Spark Plugs | - |