| MODEL | KTM 640 LC4-E SUPERMOTO 2003 - 2004 |
| Year | 2003 - 2004 |
| Engine Type | Four stroke, single cylinder, SOHC, 4 valves per cylinder |
| Displacement / Capacity | 624.6 cc / 38.1 cu in |
| Bore X Stroke | 101 x 78 mm |
| Compression Ratio | 11.0:1 |
| Cooling System | Liquid cooled |
| Max Power | 35.7 kW / 49 hp @ 7500 rpm |
| Max Torque | 52 Nm / 5.3 kgf-m / 38.4 lb-ft @ 5500 rpm |
| Ignition | Contactless DC-CDI ignition with digital advanced system, Kokusan |
| Induction | Mikuni BST 40 |
| Start System | Kick & electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 speed, claw shifted (primary drive 30:81; 1st 14:35 / 2nd 15:24 / 3rd 18:21 / 4th 20:19 / 5th 22:18) |
| Clutch | Wet, multiplate |
| Final Drive | Chain 5/8 x 1/4 in O-ring (final drive ratio 17:42) |
| CHASSIS SPECS | |
| Frame | Central chrome-moly steel frame |
| Front Suspension | 43 mm WP upside-down forks; 270 mm / 10.6 in travel |
| Rear Suspension | Central WP shock with PRO-LEVER linkage to swingarm; 300 mm / 11.8 in travel |
| Front Brakes | Single 320 mm disc, 4-piston floating caliper |
| Rear Brakes | Single 220 mm disc, 1-piston floating caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 915 mm / 36.0 in |
| Wheelbase | 1510 mm / 59.4 in |
| Ground Clearance | 335 mm / 13.2 in |
| Dry Weight | 137 kg / 302 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 120/70 - 17 |
| Rear Tyre | 160/60 - 17 |
| FUEL SYSTEM | |
| Fuel Capacity | 11 L / 2.9 US gal / 2.4 Imp gal |
| Fuel Consumption | — |
| Top Speed | — |
The LC4-E Supermoto of 2003-2004 keeps the road-going supermoto layout of KTM's 624.6 cc single, with 17-inch wheels, 43 mm WP forks and a 320 mm front disc. It has the same chassis and figures as the 2001-2002 model, with electric start available. Its light weight and short tank make it a spirited but limited-range street machine.
