14 August. Friday 2026
KTM 50 SX Factory - 2025 Specifications and Reviews
The 2025 KTM 50 SX Factory is a lightweight minibike designed for young and beginner riders learning off-road skills. Powered by a nimble 49cc two-stroke engine with automatic transmission, it delivers approachable performance and easy handling. Known for its factory-quality engineering and durable chrome-molybdenum frame, this machine excels in motocross training and recreational riding.
General information | |
| Color Options | Orange/black/grey |
| Category | Minibike, cross |
| Model | KTM 50 SX Factory |
Engine and Transmission Specifications | |
| Starting | Kick |
| Clutch | Centrifugal |
| Final Drive | Chain (final drive) |
| Gearbox | Automatic |
| Ignition | Seletra 2p D36 EMS |
| Induction | Carburettor. Dell´Orto PHBG 19 BS |
| Bore x Stroke | 39.5 x 40.0 mm (1.6 x 1.6 inches) |
| Engine Details | Reed-valve |
| Capacity: | 49.0 ccm (2.99 cubic inches) |
| | |
Physical measures and capacities | |
| Fuel Capacity | 2.30 litres (0.61 US gallons) |
| Wheelbase | 1026 mm (40.4 inches) |
| Ground Clearance | 233 mm (9.2 inches) |
| Seat Height | 653 mm (25.7 inches) If adjustable, lowest setting. |
| Dry Weight | 42.8 kg (94.4 pounds) |
KTM 50 SX Factory dimensions and frame | |
| Wheels | Dunlop Geomax MX 53 tires |
| Rear Brakes | Single disc |
| Brake Disc Diameter | 160 mm (6.3 inches) |
| Front Brakes | Single disc |
| Rear Wheel Travel | 190 mm (7.5 inches) |
| Rear Suspension | XACT WP PDS mono shock |
| Front Wheel Travel | 200 mm (7.9 inches) |
| Front Suspension | XACT 35 WP Upside-Down fork, Ø 35 mm |
| Frame | Chrome-molybdenum steel central-tube |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Update specs | Report missing specs or required updates. |
| Comments | Intended for children 4-10 years old. Special Factory Edition. |
| Rake (fork angle) | 24.0° |
| Exhaust system | Aluminum |
| Driveline | 415, Non-sealed chain |
| Engine type | Single cylinder, two-stroke |
| Model year | 2025 |
Performance Profile & Rider Fit
Best For
Track80%
City5%
Cornering75%
Daily Riding10%
Touring5%
Passenger0%
Rider Profile
| Best For | This machine is built exclusively for young beginner riders aged roughly 4 to 10, not for adults or experienced motorcyclists. |
| Purpose | It is a purpose-built entry-level motocross minibike designed to teach children the fundamentals of off-road riding in a controlled, race-oriented package. |
| Rider Fit | Its tiny 42.8 kg dry weight, low 653 mm seat height, and automatic clutch make it physically manageable for small children with limited strength and experience. |
| Character | The two-stroke engine, automatic centrifugal clutch, and factory-spec WP suspension give it a light, playful, eager-to-turn character suited to learning MX tracks. |
| Not Ideal For | It is not suitable for adult riders, road use, touring, or carrying a passenger. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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