| MODEL | KTM 640 LC4-E SUPERMOTO 2005 - 2007 |
| Year | 2005 - 2007 |
| 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 with digital advanced system (Kokusan) |
| Induction | Mikuni BST 40 |
| Start System | Kick & electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 speed, claw shifted (primary ratio 30:81; final drive ratio 17:42) |
| Clutch | Wet, multiplate |
| Final Drive | Chain 5/8 x 1/4 in O-ring |
| 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 absorber with PRO-LEVER linkage to needle-bearing 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 (reserve 2.5 L) |
| Fuel Consumption | — |
| Top Speed | — |
A road-legal supermoto built on the LC4 single-cylinder platform, using a 624.6 cc liquid-cooled engine with a Mikuni carburettor and claw-shifted five-speed gearbox. It runs 43 mm WP forks, a central WP shock with progressive linkage, and 17-inch wheels with a 320 mm front disc. It was aimed at riders wanting lightweight, flickable supermoto handling for the street and track.
