| MODEL | KTM 640 DUKE II 2001 - 2002 |
| Year | 2001 - 2002 |
| Engine Type | Four stroke, single cylinder, SOHC, 4 valves, engine balancer |
| Displacement / Capacity | 624.6 cc / 38.1 cu in |
| Bore X Stroke | 101 x 78 mm |
| Compression Ratio | 11.5:1 |
| Cooling System | Liquid cooled |
| Max Power | 40.1 kW / 55 hp @ 7000 rpm |
| Max Torque | 60 Nm / 6.1 kgf-m / 44.3 lb-ft @ 5500 rpm |
| Ignition | Kokusan contactless DC-CDI with advanced system |
| Induction | Mikuni BST 40 carburettor |
| Start System | Electric & kick |
| TRANSMISSION SPECS | |
| Lubrication | 2 x oil pumps |
| Gear Box | 5 Speed |
| Clutch | Multi-disc in oil bath |
| Final Drive | Chain, O-ring 5/8 x 1/4 in; final drive ratio 17:38 |
| CHASSIS SPECS | |
| Frame | Central chrome-moly steel frame |
| Front Suspension | WP 4054 Roma top adjuster, preload, compression and rebound adjustable; 140 mm / 5.5 in wheel travel |
| Rear Suspension | Central shock absorber WP IBS with PRO-LEVER linkage to swingarm (needle bearing); 170 mm / 6.7 in wheel travel |
| Front Brakes | Single 320 mm disc, 4 piston caliper |
| Rear Brakes | Single 220 mm disc, 1 piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 860 mm / 33.9 in |
| Wheelbase | 1460 mm / 57.5 in |
| Ground Clearance | 250 mm / 9.9 in |
| Dry Weight | 145 kg / 320 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 120/70 - ZR17 58H |
| Rear Tyre | 160/60 - ZR17 69H |
| FUEL SYSTEM | |
| Fuel Capacity | 11.3 L / 3.0 US gal / 2.4 Imp gal |
| Fuel Consumption | — |
| Top Speed | 162 km/h / 101 mph |
The Duke II in its 2001-02 form is the 624 cc supermoto with a balancer-equipped four-valve single, a steel cradle frame and WP inverted forks and monoshock. It has a 1460 mm wheelbase and 250 mm ground clearance, making it nimble on tight streets. Its small tank and limited comfort were the main criticisms, but it remained a strong handling road machine.
