| KTM's profilation of this bike |
| The 125 SX has long since established itself as the undisputed top dog above all in junior race series and as a springboard to the professional leagues. Powered by a high-performance 2-stroke engine with exhaust control system and 6-speed transmission, the 125 SX has been further improved for the 2015 model year, ensuring it will maintain its popularity with young champions in future. |
| General information |
|---|
| Model | KTM 125 SX |
| Year | 2015 |
| Category | Cross / motocross |
| Rating | 2.7 Check out the detailed rating of off-road capabilities, engine performance, maintenance cost, etc. Compare with any other bike. |
| Engine and transmission |
|---|
| Displacement | 124.8 ccm (7.62 cubic inches) |
| Engine type | Single cylinder, two-stroke |
| Engine details | Reed intake. |
| Bore x stroke | 54.0 x 54.5 mm (2.1 x 2.1 inches) |
| Fuel system | Carburettor |
| Ignition | Contactless, controlled, fully electronic ignition system with digital ignition timing adjustment, type Kokusan |
| Cooling system | Liquid |
| Gearbox | 6-speed |
| Transmission type | Chain (final drive) |
| Clutch | Wet multi-disc clutch, hydraulically operated |
| Driveline | 13:50. Primary drive: 23:73. |
| Chassis, suspension, brakes and wheels |
|---|
| Frame type | Central tube frame made of chrome molybdenum steel tubing |
| Rake (fork angle) | 26.5° |
| Front suspension | WP Suspension Up Side Down 4860 MXMA CC |
| Front wheel travel | 300 mm (11.8 inches) |
| Rear suspension | WP Suspension 5018 BAVP DCC |
| Rear wheel travel | 317 mm (12.5 inches) |
| Front brakes | Single disc. Brake calipers on floating bearings |
| Diameter | 260 mm (10.2 inches) |
| Rear brakes | Single disc. Brake calipers on floating bearings |
| Diameter | 220 mm (8.7 inches) |
| Physical measures and capacities |
|---|
| Dry weight | 90.8 kg (200.2 pounds) |
| Seat height | 992 mm (39.1 inches) If adjustable, lowest setting. |
| Ground clearance | 395 mm (15.6 inches) |
| Wheelbase | 1480 mm (58.3 inches) |
| Fuel capacity | 7.50 litres (1.98 US gallons) |
| Other specifications |
|---|
| Color options | Orange/black |
| Starter | Kick |
| Update specs | Report missing specs or required updates. |
| Further information |
|---|
| Insurance costs | Compare US insurance quotes from the nation's top providers. |
| Parts finder |
Check out our overview of motorcycle webshops at Bikez.info. |
| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. |
| Ask questions | Join the 15 KTM 125 SX discussion group or the general KTM discussion group. |
| Related bikes | List related bikes for comparison of specs. |
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Technical issues with this bike
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