22 June. Monday 2026
KTM 50 SX Pro Junior LC - 2003 Specifications and Reviews
The 2003 KTM 50 SX Pro Junior LC is a liquid-cooled two-stroke minibike designed for young riders progressing in competitive motocross. Known for its responsive handling and aggressive geometry, this machine excels in youth racing with capable suspension travel and disc braking. The 50cc powerplant delivers spirited performance ideal for developing junior riders' skills on the track.
Engine and Transmission Specifications | |
| Transmission type,final drive | Chain |
| Cooling system | Liquid |
| Fuel system | Carburettor |
| Bore x stroke | 39.5 x 40.0 mm (1.6 x 1.6 inches) |
| Engine type | Single cylinder, two-stroke |
| Capacity: | 49.80 ccm (3.04 cubic inches) |
| Category | Minibike, cross |
| Year | 2003 |
| Model | KTM 50 SX Pro Junior LC |
Brakes, suspension, Frame and wheels | |
| Rear brakes diameter | 90 mm (3.5 inches) |
| Rear brakes | Expanding brake (drum brake) |
| Front brakes diameter | 160 mm (6.3 inches) |
| Front brakes | Single disc |
| Rear tyre dimensions | 2.50-10 |
| Front tyre dimensions | 2.75-10 |
| Rear suspension travel | 205 mm (8.1 inches) |
| Front suspension travel | 140 mm (5.5 inches) |
| | |
Physical measures and capacities | |
| Fuel capacity | 2.00 litres (0.53 gallons) |
| Wheelbase | 910 mm (35.8 inches) |
| Ground clearance | 220 mm (8.7 inches) |
| Alternate seat height | 610 mm (24.0 inches) If adjustable, highest setting. |
| Seat height | 585 mm (23.0 inches) If adjustable, lowest setting. |
| Dry weight | 37.6 kg (82.9 pounds) |
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