Grand King 150

2004 Kymco Grand King 150 Technical Analysis & Specification Breakdown

Built around Kymco's naked motorcycle platform, the 2004 Kymco Grand King 150 pairs a 149.5 cc (9.1 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 12.2 HP (8.9 kW) at 8,500 rpm while maximum torque reaches 11 Nm (8.1 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 4-speed gearbox. With a specific output of 81.6 HP per liter and a 1,500 rpm working window between peak torque (7,000 rpm) and peak power (8,500 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 Grand King 150 measures 110 kg (243 lbs) dry, translating to a power-to-weight ratio of 0.11 HP/kg (9.02 kg per horsepower).

Within MotoLibrary's Kymco archive, this model family spans 2 indexed model years from 2004 to 2007, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.