KTM 640 LC4 Adventure - 2003 Specifications and Reviews
The 2003 KTM 640 LC4 Adventure is a capable single-cylinder enduro bike built for serious off-road exploration and adventure touring. Its torquey 625cc liquid-cooled engine delivers strong low-end power ideal for technical terrain and long-distance travel. Best known for reliability and versatility, it suits riders seeking genuine dual-sport capability with minimal road-biased compromise.
General information | |
| Category | Enduro / offroad |
| Year | 2003 |
| Model | KTM 640 LC4 Adventure |
| | |
Engine and Transmission Specifications | |
| Transmission typefinal drive | Chain |
| Gearbox | 5-speed |
| Cooling system | Liquid |
| Valves per cylinder | 4 |
| Fuel system | Carburettor |
| Bore x stroke | 101.0 x 78.0 mm (4.0 x 3.1 inches) |
| Compression | 11.5:1 |
| Torque | 55.00 |
| Power | 54.80 |
| Stroke | 4 |
| Engine type | Single cylinder |
| Capacity: | 625.00 ccm (38.14 cubic inches) |
Physical measures and capacities | |
| Wheelbase | 1,510 mm (59.4 inches) |
| Ground clearance | 315 mm (12.4 inches) |
| Seat height | 945 mm (37.2 inches) If adjustable, lowest setting. |
| Dry weight | 158.0 kg (348.3 pounds) |
KTM 640 LC4 Adventure dimensions and frame | |
| Rear brakes diameter | 220 mm (8.7 inches) |
| Rear brakes | Single disc |
| Front brakes diameter | 320 mm (12.6 inches) |
| Front brakes | Single disc |
| Rear tyre dimensions | 140/80-18 |
| Front tyre dimensions | 90/90-21 |
| Rear suspension travel | 320 mm (12.6 inches) |
| Rear suspension | WP - Monoshock |
| Front suspension travel | 270 mm (10.6 inches) |
| Front suspension | WP-USD 43 MA |
Speed and acceleration | |
| Power/weight ratio | 0.3468 HP/kg |
Other specs | |
| Reserve fuel capacity | 3.50 litres (0.92 gallons) |
| Fuel capacity | 28.00 litres (7.40 gallons) |






































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