690 Duke

2011 KTM 690 Duke Technical Analysis & Specification Breakdown

Engineered by KTM for the naked motorcycle segment, the 2011 KTM 690 Duke utilizes a 654 cc (39.9 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 64.4 HP (47 kW) at 7,500 rpm while maximum torque reaches 67 Nm (49.4 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a 6-speed gearbox. With a specific output of 98.5 HP per liter and a 2,000 rpm working window between peak torque (5,500 rpm) and peak power (7,500 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.

On the scales, the 690 Duke measures 148.5 kg (327 lbs) dry, translating to a power-to-weight ratio of 0.43 HP/kg (2.31 kg per horsepower). Rider ergonomics and chassis geometry center around a 865 mm (34.1 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,472 mm (58 in) wheelbase engineered for balanced agility and highway composure. The 13.5-liter (3.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's KTM archive, this model family spans 10 indexed model years from 2008 to 2019, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.