The KTM 640 Duke II is a supermotard-styled machine that embodies the spirit of adventure and excitement. Its 624cc single-cylinder four-stroke engine, with a SOHC configuration and 4 valves, is balanced by an engine balancer for smooth power delivery. This engine is the heart of the Duke, producing a potent 41kW (55bhp) with more torque than its predecessor.
The chassis is a steel-tube cradle design, equipped with WP upside-down forks and a WP monoshock, providing exceptional handling and stability. The bike’s styling is just as impressive, with a distinctive twin headlight nosecone and 43cm (17in) cast wheels. The massive 320mm (12.6in) front brake disc, paired with a single four-piston Brembo racing caliper, offers incredible braking power.
On the road, the Duke excels in tight city streets and mountain passes, where its quick steering and long travel suspension work in harmony. Its incredible agility allows it to navigate narrow bends with ease, making it a formidable opponent on twisty roads. However, it’s not suited for long trips due to its limited comfort and equipment, as well as its tiny 11.5-litre fuel tank. The Duke’s high-specification chassis parts come at a price, making it an expensive machine that costs as much as some 600cc four-cylinder bikes.
Key Specifications
Engine Type
Four stroke, single Cylinder. SOHC, 4 valves, engine balancer
Engine Capacity
624.6 cc / 38.1 cu in
Max Power
40.1 kw / 55 hp
Max Torque
60 Nm / 6.1 kgf-m / 44.3 lb-ft @ 5500 rpm
Fuel Tank Capacity
3.0 US gallons / 11.3 L
Seat Height
33.9 inches / 860 mm
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
KTM 640 Duke II
Year
2003 – 2004
Engine
Engine Type
Four stroke, single Cylinder. SOHC, 4 valves, engine balancer
*We strive to provide the most comprehensive and accurate specifications possible. However, certain details may not be available if the manufacturer did not disclose them or if the information is no longer publicly accessible. If you find any discrepancy with any data on this site, please feel free to let us know at contact@throttlecraze.com
