17 May. Sunday 2026
300 Sx - 2025 Specifications and Reviews
The 2025 KTM 300 SX is a lightweight two-stroke motocrosser designed for intermediate to advanced riders seeking aggressive performance and precision handling. Powered by a 293cc liquid-cooled single-cylinder engine with Keihin EFI and paired with a five-speed transmission, it delivers potent power delivery and exceptional maneuverability. Known for its competitive edge in motocross racing and high-octane trail riding, the 300 SX combines raw speed with fuel efficiency and modern emission standards.
2025
General information | |
| Color Options | Orange/black/grey |
| Category | Cross / motocross |
| Year | 2025 |
| Model | KTM 300 SX |
Engine and Transmission Specifications | |
| Starting | Electric |
| Emission | 64.7 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Fuel Consumption | 2.79 litres/100 km (35.8 km/l or 84.31 mpg) |
| 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 | 72.0 x 72.0 mm (2.8 x 2.8 inches) |
| Engine Type | Single cylinder, two-stroke |
| Capacity | 293.2 ccm (17.89 cubic inches) |
| | |
Physical measures and capacities | |
| Fuel Capacity | 7.20 litres (1.90 US gallons) |
| Wheelbase | 1493 mm (58.8 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) |
| | |
300 Sx dimensions and frame | |
| Wheels | Spoked wheels with aluminium rims |
| Rear Brakes | Single disc. Brembo single-piston floating calliper, brake disc |
| Brake Disc Diameter | 220 mm (8.7 inches) |
| Front Brakes | Single disc. Brembo 2-piston floating caliper |
| Rear Tyre | 2.15-19 |
| Front Tyre | 1.60-21 |
| 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 300 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. |
| Electrical | 2 Ah lithium-ion battery |
| Rake (fork angle) | 26.1° |
| Exhaust system | Aluminum |
| Driveline | 520, Non-sealed chain |
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