22 June. Monday 2026
KTM 125 SX - 2013 Specifications and Reviews
The 2013 KTM 125 SX is a lightweight two-stroke motocross bike engineered for young and intermediate riders developing their skills on the track. Its compact 125cc engine delivers sharp throttle response and agile handling through tight corners, while the liquid-cooled single-cylinder design ensures reliable performance. Known for its responsive powerband and nimble chassis, this machine excels in technical terrain and represents KTM's commitment to entry-level motocross racing.
General information | |
| Category | Cross / motocross |
| Year | 2013 |
| Model | KTM 125 SX |
| | |
Engine and Transmission Specifications | |
| Driveline | 13:50. Primary drive: 23:73. |
| Clutch | Wet multi-disc clutch / hydraulically operated |
| Transmission type,final drive | Chain |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Ignition | Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan |
| Bore x stroke | 54.0 x 54.5 mm (2.1 x 2.1 inches) |
| Engine details | Reed intake. |
| Engine type | Single cylinder, two-stroke |
| Capacity: | 124.80 ccm (7.62 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Rear brakes diameter | 210 mm (8.3 inches) |
| Rear brakes | Single disc. Two-piston calipers. |
| Front brakes diameter | 220 mm (8.7 inches) |
| Front brakes | Single disc. Four-piston calipers. |
| Rear suspension travel | 185 mm (7.3 inches) |
| Rear suspension | WP Â Suspension 5018 BAVP DCC |
| Front suspension travel | 205 mm (8.1 inches) |
| Front suspension | WP Â Suspension Up Side Down 4860 MXMA CC |
| Rake (fork angle) | 26.5° |
| Frame type | Central tube frame made of chrome molybdenum steel tubing |
Physical measures and capacities | |
| Fuel capacity | 7.50 litres (1.98 gallons) |
| Wheelbase | 1,480 mm (58.3 inches) |
| Ground clearance | 395 mm (15.6 inches) |
| Seat height | 992 mm (39.1 inches) If adjustable, lowest setting. |
| Dry weight | 90.8 kg (200.2 pounds) |
Other specs | |
| Wheelbase | 1,000 mm (39.4 inches) |
| Overall width | 830 mm (32.7 inches) |
| Overall length | 2,090 mm (82.3 inches) |
| Overall height | 1,140 mm (44.9 inches) |
| Power/weight ratio | 0.0815 HP/kg |
| Rear tyre | 110/80-17 |
| Front tyre | 100/80-17 |
| Fuel control | Single Overhead Cams (SOHC) |
| Fuel system | Carburettor |
| Valves per cylinder | 2 |
| Bore x Stroke | 57.0 x 48.8 mm (2.2 x 1.9 inches) |
| Compression | 10.6:1 |
| Torque | 9.20 Nm (0.9 kgf-m or 6.8 ft.lbs) @ 7000 Revolutions">RPM |
| Power | 11.00 Horsepower">HP (8.0 Kilowatt">kW)) @ 8500 Revolutions">RPM |
| Capacity: | 124.50 ccm (7.60 cubic inches) |
| Model | Keeway TXM125 |
| Color options | Orange/black |
| Starter | Kick |
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