It doesn’t always have to be a four-stroke. The 2013 KTM 250 SX has raised the bar to another level in its class and is now a formidable weapon to combat the competition thanks to its incredible power combined with extremely low weight. Simply unbeatable in terms of power-to-weight ratio.
ENGINE
| Design | 1-cylinder 2-stroke engine, water-cooled, with reed intake and exhaust control |
|---|---|
| Displacement | 249 cm³ (15.19 cu in) |
| Bore | 66.4 mm (2.614 in) |
| Stroke | 72 mm (2.83 in) |
| Starting aid | Kick starter |
| Gearbox | 5-gear, claw shifted |
| Primary transmission | 26:72 |
| Secondary ratio | 13:48 |
| Clutch | Multidisc clutch in oil bath/hydraulically activated |
| Ignition | Contactless controlled fully electronic ignition with digital ignition adjustment, type Kokusan |
CHASSIS
| Frame | Central tube frame made of chrome molybdenum steel tubing |
|---|---|
| Fork | WP Suspension Up Side Down 4860 MXMA CC |
| Shock absorber | WP Suspension 5018 BAVP DCC |
| Suspension travel Front | 300 mm (11.81 in) |
| Suspension travel Rear | 317 mm (12.48 in) |
| Brake system | Disc brakes, brake calipers on floating bearings |
| Brake discs – diameter Front | 260 mm (10.24 in) |
| Brake discs – diameter Rear | 220 mm (8.66 in) |
| Chain | 5/8 x 1/4″ |
| Steering head angle | 63.5° |
| Wheelbase | 1,495±10 mm (58.86±0.39 in) |
| Ground clearance unloaded | 385 mm (15.16 in) |
| Seat height unloaded | 992 mm (39.06 in) |
| Total fuel tank capacity, approx. | 7.5 l (1.98 US gal) Super unleaded gasoline (95 octane), mixed with 2-stroke engine oil (1:60) |
| Weight without fuel, approx. | 96.8 kg (213.4 lb.) |