22 July. Wednesday 2026
KTM 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.
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) |
KTM 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 | |
| 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 |
Performance Profile & Rider Fit
55 hp
Peak Power (est.)
Best For
Track8%
City6%
Cornering15%
Daily Riding3%
Touring2%
Passenger0%
Rider Profile
| Best For | For experienced and competitive riders. The explosive two-stroke power and race-only setup will overwhelm beginners. |
| Purpose | A pure-bred motocross weapon built for racing berms, jumps and rough terrain at full attack on closed circuits. |
| Rider Fit | Tall 958mm seat, extremely light 99kg dry, long-travel WP AER forks and slim ergonomics. Demands a rider ready to stand and attack. |
| Character | Featherweight, hard-hitting and razor-sharp — a violent, high-revving two-stroke MX machine that lives to be ridden hard. |
| Not Ideal For | Not for commuting, touring, road riding, passengers or anyone wanting a comfortable, easygoing bike. No lights, no plate. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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