640 Duke II

2000 KTM 640 Duke II Technical Analysis & Specification Breakdown

Engineered by KTM for the super motard motorcycle segment, the 2000 KTM 640 Duke II utilizes a 625 cc (38.1 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 49 HP (35.8 kW) at 7,000 rpm while maximum torque reaches 54 Nm (39.8 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 78.4 HP per liter and a 1,500 rpm working window between peak torque (5,500 rpm) and peak power (7,000 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

On the scales, the 640 Duke II measures 145 kg (320 lbs) dry, translating to a power-to-weight ratio of 0.34 HP/kg (2.96 kg per horsepower). Rider ergonomics and chassis geometry center around a 880 mm (34.6 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,460 mm (57.5 in) wheelbase engineered for balanced agility and highway composure. The 12-liter (3.2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 170 km/h (106 mph).

Within MotoLibrary's KTM archive, this model family spans 3 indexed model years from 1999 to 2007, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.