14 August. Friday 2026
KTM 50 SX - 2025 Specifications and Reviews
The 2025 KTM 50 SX is a lightweight minibike designed for young and beginner riders entering the sport of motocross. Powered by a 49cc two-stroke engine with automatic transmission, it delivers sharp acceleration and easy handling on dirt tracks. Known for its aggressive styling and responsive WP suspension, the 50 SX excels as an entry-level cross machine that builds fundamental riding skills.
General information | |
| Color Options | White/orange/black/purple |
| Category | Minibike, cross |
| Year | 2025 |
Engine and Transmission Specifications | |
| Starting | Kick |
| Clutch | Centrifugal |
| Final Drive | Chain (final drive) |
| Gearbox | Automatic |
| Ignition | Seletra 2p D36 EMS |
| Induction | Carburettor |
| Bore x Stroke | 39.5 x 40.0 mm (1.6 x 1.6 inches) |
| Engine Type | Single cylinder, two-stroke |
| 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 | 42.5 kg (93.7 pounds) |
KTM 50 SX dimensions and frame | |
| Wheels | Spoked wheels with aluminium rims. Maxxis 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 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. |
| Rake (fork angle) | 24.0° |
| Driveline | 415, Non-sealed chain |
| Motorcycle name | KTM 50 SX |
Performance Profile & Rider Fit
Best For
Track55%
City5%
Cornering60%
Daily Riding5%
Touring5%
Passenger0%
Rider Profile
| Best For | This is a first motorcycle built for young children just starting out in motocross, not for teen or adult riders of any skill level. |
| Purpose | It exists purely to teach a child the fundamentals of balance, throttle control, and off-road riding in a safe, low-powered package. |
| Rider Fit | Its very low 653 mm seat height and lightweight small-bore chassis are sized specifically for small children, with an adjustable centrifugal clutch to tailor power delivery to their skill. |
| Character | It behaves like a purpose-built miniature dirt bike, docile and forgiving with an automatic single-speed gearbox that removes clutch and shifting complexity so a child can focus on riding. |
| Not Ideal For | It is not suitable for adults, taller teens, road use, touring, or anyone seeking real speed or highway capability. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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