14 August. Friday 2026
KTM 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) |
KTM 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 | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| 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 |
Performance Profile & Rider Fit
Best For
Track85%
City5%
Cornering90%
Daily Riding5%
Touring8%
Passenger0%
Rider Profile
| Best For | This is a full-blooded competition motocrosser best suited to experienced or intermediate off-road riders comfortable with a peaky 2-stroke powerband. |
| Purpose | Built purely for motocross track riding and racing, not for street use or general transportation. |
| Rider Fit | The tall 958 mm seat height, aggressive ergonomics, and physical demands of a light 2-stroke race bike require good rider fitness and reasonable inseam length. |
| Character | Sharp, explosive, and razor-agile, this bike rewards aggressive riding and precise throttle control with rapid acceleration bursts and flickable handling. |
| Not Ideal For | This is not suitable for commuting, touring, carrying passengers, or riders seeking a comfortable, low-maintenance everyday motorcycle. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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