660 SMC

2004 KTM 660 SMC Technical Analysis & Specification Breakdown

Positioned in KTM's super motard motorcycle lineup, the 2004 KTM 660 SMC pairs a 654 cc (39.9 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 32.2 HP (23.5 kW) at 6,500 rpm while maximum torque reaches 43 Nm (31.7 lb-ft) at 4,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 49.2 HP per liter and a 2,500 rpm working window between peak torque (4,000 rpm) and peak power (6,500 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.

On the scales, the 660 SMC measures 131 kg (289 lbs) dry, translating to a power-to-weight ratio of 0.25 HP/kg (4.07 kg per horsepower). Rider ergonomics and chassis geometry center around a 910 mm (35.8 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,510 mm (59.4 in) wheelbase engineered for balanced agility and highway composure. The 9-liter (2.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's KTM archive, this model family spans 4 indexed model years from 2003 to 2007, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.