17 May. Sunday 2026
250 SX - 2025 Specifications and Reviews
The 2025 KTM 250 SX is a lightweight two-stroke motocross bike engineered for intermediate to advanced riders seeking competitive performance. Powered by a 249cc reed-valve engine with modern Keihin fuel injection, it delivers sharp power delivery ideal for both training and racing. Known for its agile handling and proven reliability, the 250 SX excels in motocross competition and high-speed off-road riding.
2025
General information | |
| Color Options | Orange/black/grey |
| Category | Cross / motocross |
| Model | KTM 250 SX |
Engine and Transmission Specifications | |
| Starting | Electric |
| Clutch | Wet, DDS multi-disc clutch, Brembo hydraulics |
| Final Drive | Chain (final drive) |
| Gearbox | 5-speed |
| Cooling System | Liquid |
| Ignition | Vitesco Technologies EMS |
| Induction | Injection. Keihin EFI, throttle body 39 mm |
| Bore x Stroke | 66.4 x 72.0 mm (2.6 x 2.8 inches) |
| Engine Details | Reed intake |
| Capacity | 249.0 ccm (15.19 cubic inches) |
Physical measures and capacities | |
| Fuel Capacity | 7.20 litres (1.90 US gallons) |
| Wheelbase | 1495 mm (58.9 inches) |
| Ground Clearance | 354 mm (13.9 inches) |
| Seat Height | 958 mm (37.7 inches) If adjustable, lowest setting. |
| Dry Weight | 99.4 kg (219.1 pounds) |
| | |
250 SX dimensions and frame | |
| Wheels | Spoked wheels with aluminium rims |
| Rear Brakes | Single disc |
| Brake Disc Diameter | 220 mm (8.7 inches) |
| Front Brakes | Single disc |
| Rear Tyre | 110/90-19 |
| Front Tyre | 80/100-21 |
| Rear Wheel Travel | 300 mm (11.8 inches) |
| Rear Suspension | WP XACT Monoshock with linkage |
| Front Wheel Travel | 310 mm (12.2 inches) |
| Front Suspension | WP XACT-USD (AER), Ø 48 mm |
| Frame | Central double-cradle-type 25CrMo4 steel. Aluminum-reinforced polyamide subframe. |
Other specs | |
| Related bikes | List related bikes for comparison of specs. |
| Ask questions | Join the 25 KTM 250 SX discussion group or the general KTM discussion group. |
| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. |
| Insurance costs | Compare US insurance quotes from the nation's top providers. |
| Update specs | Report missing specs or required updates. |
| Rake (fork angle) | 26.1° |
| Exhaust system | Aluminum |
| Driveline | 520, Non-sealed chain. |
| Engine type | Single cylinder, two-stroke |
| Year | 2025 |
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