14 August. Friday 2026
KTM 50 SX Pro Junior LC - 2004 Specifications and Reviews
The 2004 KTM 50 SX Pro Junior LC is a liquid-cooled two-stroke minibike designed for young competitive riders seeking aggressive off-road performance. Known for its lightweight agility and responsive handling, this model combines a potent 6hp engine with quality Marzocchi and WP suspension for serious junior motocross training and racing.
Engine and Transmission Specifications | |
| Transmission type,final drive | Chain |
| Gearbox | Automatic |
| Cooling system | Liquid |
| Fuel system | Carburettor |
| Bore x stroke | 39.5 x 40.0 mm (1.6 x 1.6 inches) |
| Power | 6.00 |
| Engine type | Single cylinder, two-stroke |
| Capacity: | 49.00 ccm (2.99 cubic inches) |
| | |
| Category | Minibike, sport |
| Year | 2004 |
| Model | KTM 50 SX Pro Junior LC |
Brakes, suspension, Frame and wheels | |
| Rear brakes diameter | 216 mm (8.5 inches) |
| Rear brakes | Expanding brake (drum brake) |
| Front brakes diameter | 216 mm (8.5 inches) |
| Front brakes | Single disc |
| Rear suspension | WP monoshock |
| Front suspension | Marzocchi 32 mm |
| 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 | 650 mm (25.6 inches) If adjustable, lowest setting. |
| Power/weight ratio | 0.1596 HP/kg |
| Dry weight | 37.6 kg (82.9 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
Performance Profile & Rider Fit
Best For
Track40%
City5%
Cornering60%
Daily Riding5%
Touring0%
Passenger0%
Rider Profile
| Best For | This is a first-step competition machine built specifically for young children just starting out in motocross, not for teens or adults of any skill level. |
| Purpose | It exists purely to teach small kids the basics of motocross racing on a scaled-down, centrifugal-clutch bike that removes the complexity of manual shifting. |
| Rider Fit | Its tiny 585 mm seat height and 37.6 kg weight are designed around a young child's small stature and low strength, not any adult rider. |
| Character | Simple, tough, and forgiving in character, with an automatic clutch and mellow two-stroke delivery intended to build confidence rather than deliver thrills. |
| Not Ideal For | This bike is not suitable for any adult, teenager, or anyone seeking real speed, comfort, or road-going capability. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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