KTM 50 SX Junior - 2006 Specifications and Reviews
The 2006 KTM 50 SX Junior is a liquid-cooled two-stroke minibike designed for young motocross riders developing their skills. Known for its responsive handling and aggressive styling, this entry-level competition machine combines a lightweight frame with quality Marzocchi suspension for confident cornering on the track.
Engine and Transmission Specifications | |
| Exhaust system | Aluminum |
| Clutch | Centrifugal clutch (adjustable) |
| Cooling system | Liquid |
| Lubrication system | 0,15- 0,2 l Motorex ATF Super |
| Ignition | Seletra analogue |
| Fuel system | Carburettor. Dell´Orto PHVA 14DS |
| Bore x stroke | 39.5 x 40.0 mm (1.6 x 1.6 inches) |
| Engine type | Single cylinder, two-stroke |
| Capacity: | 49.00 ccm (2.99 cubic inches) |
| Category | Minibike, cross |
| Year | 2006 |
| Model | KTM 50 SX Junior |
Brakes, suspension, Frame and wheels | |
| Rear brakes | Expanding brake (drum brake) |
| Front brakes diameter | 160 mm (6.3 inches) |
| Front brakes | Single disc |
| Rear suspension | WP monoshock |
| Front suspension | Marzocchi 32 mm (1.26 inches) |
| Rake (fork angle) | 24.0° |
| Frame type | Central double-cradle-type frame |
| | |
Physical measures and capacities | |
| Fuel capacity | 1.80 litres (0.48 gallons) |
| Wheelbase | 910 mm (35.8 inches) |
| Ground clearance | 220 mm (8.7 inches) |
| Seat height | 585 mm (23.0 inches) If adjustable, lowest setting. |
| Dry weight | 37.6 kg (82.9 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Starter | Kick |
Performance Profile & Rider Fit
Best For
Track10%
City5%
Cornering30%
Daily Riding5%
Touring5%
Passenger0%
Rider Profile
| Best For | This is a first-motorcycle machine built specifically for very young children just starting to learn balance and throttle control, not for riders with any prior experience expectations. |
| Purpose | It exists purely to teach small children the basics of off-road motorcycling in a safe, low-power, automatic-clutch package. |
| Rider Fit | Its tiny 607mm seat height, sub-40kg dry weight, and automatic centrifugal clutch make it suitable only for young kids, typically around 4 to 6 years old. |
| Character | Simple, forgiving, and non-intimidating, this minibike is designed to build confidence with gentle power delivery and no manual shifting required. |
| Not Ideal For | It is not suitable for teenagers, adults, road use, or anyone seeking real speed, power, or long-distance capability. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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